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My ZUPRA90 build ;)

EsTee

Moderator
Tuning is the popular way to go on the Zupra, but there are those that don't want to deal with the potential headaches with a tune (all depends on how good of a tuner you have), and just want a really quick and easy plug and play solution. Enter in BMS JB4, which has a very large user base in the Bimmer world already :

JB4 for Supra Review
https://burgertuning.com/products/jb4-for-a90-toyota-supra


TL;DR : Great little starter PnP boost controller/tuner w/ datalogging capabilities that can be upgraded (or sold) in the future
Design : 4/5 - BT wireless w/ OB2 datalogging capabilities, and simple to more configurable boost controls. Can provide future fuel controls as well.
Installation : 4/5 - Very easy once you locate the right grommet to punch through.
Performance : 4/5 - 4mph gain in the 1/4 mile wont let you get embarrassed rolling in THE Zupra.
Value : 4/5 - Upgradeable, yet also sellable in the future to recuperate your investment over the long run when you're ready for more.zFactor : 4/5 - JB4 has a great name in the Bimmer world and results speak for itself.
ZTT Score : 4/5; HIGHLY RECOMMENDED for those who want to keeping things stealthy and easy, yet not be embarrassed by domestic cars or souped up Honduhs and FRZ86s.
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NOTES
Design : The JB4 works by spoofing the TMAP sensor (boost) sensors to the ECU thinking it is lower than it is requiring the ECU to compensate. This raises the boost AND changes the load cells to be lower, which typically gives more timing in concert with the increased boost. All of this is piggyback style on top of the stock ECU parameters and read and modified through with the OBD2 port, with a wireless interface to your phone via a JB4 app.
Installation : Installation was very easy, once you know what plugs to take out (i followed some B58 guides). Hardest part was getting the wires through the firewall grommet (use a very long screwdriver to help), and after that it was just connecting plug together.
Performance : I gained about .3 second ET and 4mph with just a very conservative map setting on crap 91. You should be gain much more on higher octane. Note that I would not recommend map 3 (+6psi) and instead use a custom map 6 instead, due to overboosting between gears (which causes throttle closures).

JB4 Map2 +4psi (91)
0-60mph 4.15
1/8 mile 7.94 @ 91.58 mph
1/4 mile 12.23 @ 114.81 (DA 1135)

Stock (91)
0-60mph 4.43
1/8 mile 8.13 @ 88.46 mph
1/4 mile 12.57 @ 110.64 (DA 1013)

Value : What's really nice about the JB4 is once you've graduated to a bigger turbo or high ethanol blends, you can either sell it to recoup your costs, or use it in conjunction with a back end map to further fine tune it to your needs.
zFactor : JB4 has a long history with Bimmers and a very reputable name in that space. I also like the datalogging capabilities that it provides which are easily to read, graph, and share with.
Final Thoughts : JB4 is a great little device that does what is advertised as: a great way to easily gain horsepower w/o being too invasive to your car (easily removed), datalog that everything is ok, and still retain value into the future. We definitely recommend this for the Zupra novices and those who just want to amp up the stock performance a bit to not be embarrassed out on the street, stock.

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Last edited by a moderator:

EsTee

Moderator
For those that want to install a Burger Motorsports JB4, here's the process and pics (there are none out on the web presently) :

1. connect front TMAP connectors up

2. Connect middle MAP connectors up

3. Punch firewall grommet (located to right of brake booster in driver side under the accessor port in engine bay) and slide OBD2 wire through from inside vehicle.

4. Connect up the JB4 unit

Takes maybe 10minutes, if you know what you're doing. Hardest part is routing the cable through the firewall.

I'll be playing with it more and will have a review soon for everyone! Terry Burger

https://burgertuning.com/products/jb4-for-a90-toyota-supra

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EsTee

Moderator
Here are more data for ya'll w/ JB4 on same night passes (you can download the CSVs by scrolling down and click download):

- Stock, stock : Dragy 12.57 https://datazap.me/u/estee/jb4-map-0-stock-1010-all-stock-1257?log=0&data=1-4

- Map 1 : Dragy 12.37 https://datazap.me/u/estee/jb4-map-1-1237-1010?log=0&data=1-4

- Map 2 : Dragy 12.26 https://datazap.me/u/estee/jb4-map-2-1226-1010?log=0&data=1-4

- Map 3 : Dragy 12.49 https://datazap.me/u/estee/jb4-map-3-1249-shutdown-1010?log=0&data=1-4 Note: Map 3 had overboost shutdown at launch, but otherwise ran fine.

Going to look at making a custom MAP6 soon based on this data, dial in +4-5 boost and take out some of the first gear overboost. Would recommend only MAP2 at the most to Zupra owners.

And yes, tunes are ideal, but im waiting on some stuff for it first. This for users of JB4.... 1f642.pngScreenshot_20191011-132912_dragy.jpg1f642.png
 

EsTee

Moderator
It's been a while for updates after messing around with the JB4, as I have been waiting for the right downpipe, and AMS was kind of enough to let me buy an early one to try out. So without further ado, we're back on the mod train that is the A90.....

AMS Performance Supra A90 Downpipes
https://amsperformance.com/product-category/toyota/


TL;DR : Well engineered design with the power and times to back it up for a must have set it and forget mod.

Design : 4/5 - Well designed with large center section to promote faster gas exit with a very durable good flex pipe section in TU304 SS finish with great welds and made in the good ol' USA!
Installation : 4/5 - V-band for the stock turbos and a perfect fit for the stock exhaust.
Value : 3/5 - Made of TU304 SS with great welds making it a very durable and reliable setup.
Performance 5/5 - works as advertised with gains allowing us to crack 11s with a JB4
zFactor : 4/5 - The exhaust sounds mean, especially the pops and bangs, which sounds like a shotgun going off!
ZTT Score : 4/5; HIGHLY RECOMMENDED for power and durability.
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NOTES
Design : Admittedly, there are a ton of options on the market for an A90 downpipe, but the things I general look for are: 1) how large of diameter is the bottleneck, 2) how the flexpipe section is made, and 3) the material and welding that is finished in. AMS checks off all these boxes with a well engineered product that has 4" to ~3.6" going to the stock exhaust of 3.15" to retain backwards compatibility with the stock exhaust while promoting higher gas velocity from the turbos for better spool and more power.

Installation : Installation was not difficult, just requiring you to remove the vband clamp to the turbos, and slightly remove the exhaust system to extract it out (full removal is not necessary). Make sure you get a good o2 defeater if you dont intend on getting at tune, because DME is particular sensitive to the absence of a cat.

Performance : I gained about .24 sec in the quarter mile allowing me to break into the 11s (finally). Yes, my DA was lower then before, but there was a pronounced difference in spool up and overall responsiveness with the downpipe that can be readily felt.

JB4 Map2 +4ps (91) + Downpipe
0-60 4.04 sec
1/8 mile 7.82 @93.96
1/4 mile 11.99 @ 117.75 (DA 559)

JB4 Map2 +4psi (91)
0-60mph 4.15 sec
1/8 mile 7.94 @ 91.58 mph
1/4 mile 12.23 @ 114.81 (DA 1135)

Stock (91)
0-60mph 4.43
1/8 mile 8.13 @ 88.46 mph
1/4 mile 12.57 @ 110.64 (DA 1013)

Value : There are cheaper alternatives out in the market, but to me the SS TU304 material combined with the solid flex pipe section combined with the well engineered and larger center section makes it worth it. The last thing you want is to have things break on you, especially with the cheaper braided type flex pipes out there (AMHIK).

zFactor : Once the dp goes on and the cats are removed, the scintillating sounds of an I6 is finally uncorked, especially when you you rev it for the pops and bangs!

Final Thoughts : Well engineered for maximum flow, while ensure a lasting investment with the SS and a great flex pipe section to boot, you cant go wrong with the AMS DP!

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EsTee

Moderator
One trick for install that we did: instead of dropping the whole exhaust like some of the youtube videos show, we just unbolted the front and mid sections to drop the front slightly, and then slip off the stock downpipe. Saves a lot of time and headaches this way.20191010_100858.jpg
 

EsTee

Moderator
As people start modding and going faster, one key thing people often overlook are the brakes. While the stock brakes work pretty good, I took the opportunity to try out the APG 6-pot front BBK kit for the Supra:

APG A90 Supra front BBK

TL;DR : Awesome BBK brakes that perform as great as they look at a great pricepoint!

Design : 4/5 - Lightweight, radial mounted, 6 pot forged monoblock calipers, with 2 piece rotor design.
Installation : 3/5 - Though lacking in detailed instructions, it is still pretty straightforward if you are logical about it.
Value : 4/5 - While it is still on the pricier side for mods, it does come with everything including ss lines, pads, etc.
Performance 4/5 - Brakes bite very hard now, so you'll need to be judicious with you feet, but a noticeable improvement in brakes times.
zFactor : 5/5 - while they are already blinged out with a variety of colors and designs, one other cool factor is that you can actually mount some 17" wheels now (for the trackhos out there)!
zTT Score : 4/5 : HIGHLY RECOMMENDED as they perform as well as they look for a great price!
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NOTES

Design : Toyco stock specs are 348mm rotors oem, 4 pot, 46lbs oem (28.8 rotors, 17.2 calipers) vs APG's 356mm rotors, 6 pot 32lbs (21lbs rotors, 9.6 calipers, 1 bracket and ss lines). That's a significant savings of ~14lbs per front corner. They calipers are also radially mounted for better alignment and rigidity as well. Each caliper is a strong and lightweight forged monoblock unit, while the rotors utilize a 2 piece aluminum hat design.

Installation : The instructions that come with the kit were in black and white and were rather ambiguous. However, it wasn't difficult to figure out through a little trial and error. The biggest issue was rerouting the too long SS lines, and figuring out where to put the stock brake sensors. Otherwise, everything went in pretty well.

Performance : I chose the street/track pads, so combined with the SS lines, my brakes have a bit more bite to them then OEM rotors and the Dragy 60 to 0 data shows it with a .2 decrease in times. You have to be much more judicious on the brakes now though, as you

APG Brakes
60 - 0 : 2.84, 117.9 ft
Stock OEM Brakes
60 - 0 : 3.03, 122.3 ft

Value : $2k+ brake kits arent usually associated with being budget friendly, but these are about 1/3 to 1/2 the costs of competing BBKs out in the market today, and comes with all necessary SS lines and brake pads as well.

zFactor : Unlike other BBK kits, there's a lot of customizability you can do, including picking the usual drilled/slotted rotors, but also the color of the rotor hats and calipers (including being fully anodized) to max out the bling factor. Also, as an added bonus, for the track guys, you can mount some 17's now as well to run much cheaper track tires!

Final Thoughts : The APG A90 Supra BBK kit is exactly what i wanted: a lightweight, cost effective BBK kit that helps me brake better for my high speed runs. As an added bonus, they look fantastic and they surprisingly allowed me to run 17s in the front!

Special thanks to Alvin Chiang. Please contact him for all your APG brake needs!20191108_104300.jpg20191108_104357.jpg20191108_104543.jpg20191108_124254.jpg20191108_124313.jpgScreenshot_20191114-221120_Facebook.jpg20191108_104543.jpg20191108_124254.jpg20191108_124313.jpg

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SupraTribe.com

Administrator
294
Those are nice. You mentioned Alvin Chiang - how would people get in touch with him? Is there a website they can go to see these kits and pricing? Does APG offer any rebuilding services for the calipers for those who track their cars heavily? Doubt that will matter to most MKV owners right now, but it will to some.
 

EsTee

Moderator
Let's be frank: the stock stereo system in the MKV sucks, even in the upgraded JBL package. To address this, i looked at one of the chief complaints: the low frequency sub output (or lack thereof). With this in mind, I did a simple upgrade by adding:

Punch 8" 300-Watt Powered Enclosure (P300-8P)

TL;DR : A simple subwoofer to upgrade the MKV's crappy sound system that booms!

Design : 4/5 - Self amplified with 300W RMS of power, easy hookup in a small, removable package with a remote bass boost control!
Installation : 4/5 - Since the battery is in the trunk, easy power routing, with a simple t-tap to the speaker for high level inputs.
Value : 4/5 - For $200 and DIY install, it's a great bang for the buck to get that boom back!
Performance - N/A
zFactor : 4/5 - You can look good and sound good, and still easily remove the 19lbs of weight if you're going to the track!
zTT Score : 4 / 5 : HIGHLY RECOMMENDED to everyone that wants to upgrade their stock sound system.
_________
Notes:

Installation (~1hr):
- Open up the rear floor to get access to the battery and hook up 12V and GND as needed
- Pop off the passenger side speaker cover, and pull out the connector to the subwoofer. Run a T-Tap into the speaker wires and rout back through the bottom out (you may need to pop out the rear bottom panel).
- Hook up to the Subwoofer and select hi level inputs (you made need to change the phase if the wires are in reverse)
- Crank up the volume and enjoy
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EsTee

Moderator
In the last review, we added some Sparco seats to our Zupra, but it's been a struggle getting a racing harness installed (since the OEM seat belts are eliminated). With that in mind, i started looking at some alternatives and found an interesting bolt on solution:

Macht Schnell seat mount, sub and side mounting brackets.
https://machtschnell.com/
Sparco QRT-R Seats
https://www.sparcousa.com/qrt-r
Sparco 6 point Racing harness
https://www.sparcousa.com/6pt-belt

TL;DR : Full bolt on solution for our A90 with lower height and weight on top of it!
Design : 4/5 - Seat brackets are aluminum and very lightweight and offer a variety of mounting points, although it is no longer adjustable.
Installation : 3/5 - A bit of trial and error, but was able to install readily, albeit its offset a little left of the steering wheel.
Value : 2/5 - On the high side of seat brackets, however it is a modular solution so you can add on what you need.
Performance - N/A
zFactor : 4/5 - Fully blinged out AND fully functional for real track duties
zTT Score : 3.25 / 5 : RECOMMENDED if you are installing racing seats and racing seat harness and want it fully bolt on.
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NOTES

Design : The Macht Schnell racing seat mounting pieces include the seat brackets (6lbs), the side belt brackets (3lbs), and the sub belt bracket (2.7lbs) - note: you still need a side mount for your seats (~5lbs). They are modular so if you want to drill into your Supra, you can just use the seat brackets by itself. The seat brackets are very well made with multiple points to mount (though it is not adjustable). The harness pieces are intended to use for side and submarine harness belts (I use the rear cross bar as my shoulder harness mount).

Installation : Since the brackets are modular pieces, you can mix and match what you need for your seats and racing harness. Since I have a Sparco 6 point, I needed all the pieces collectively. The install wasn't difficult, just time consuming, as you'll want to test fit your seats to get the right placement for the brackets. In the end, i had to offset the brackets slightly to the left side for accessibility to the inner seat bolts, which is mildly annoying, but not really noticeable unless you're OCD.

Performance : N/A

Value : The seat mount brackets were $200, the sub belt was $50, and the side bolt mounts were another $150. While it is more costly then drilling or welding in your own, i like the fact that it was bolt on, so I could always go back to my OEM seats if i chose to.

zFactor : Most racing organizations requires seat harnesses, so this is almost a necessity for track hos. While it's very blingy, functionality and safety was what i was after and this checked those boxes readily!

Final Thoughts : Because the Zupra A90 platform is so new, there were a lot of challenges installing racing seats. These Macht Schnell parts helps to overcome a lot of the obstacles with installing a racing seat. Even if folks figure out a way to run the OEM seat belts, the setup can be back out (for incremental weight savings) and still be usable as well.79530332_10221566583141897_4981364968969469952_o.jpg80622054_10221566582261875_1611284623503917056_o.jpg79250647_10221566581541857_6212178072016257024_o.jpg
 

EsTee

Moderator
For those that have been in the Supra world awhile (read: are old), you will understand the 3 later acronym of BPU, or Basic Performance Upgrade. This is like the basic formula on the MKIV for a nice simple 400+ whp gain. On the MKV, it looks like that baseline has risen to 450whp to even 500whp, especially with today's easy to use OTS flashes. In a 3 part series, I'm going to look at both BM3 and MHD, with BM3 on v1.2 first and then v2.0 later......

PRO Tuning Freaks Bootmod 3 Stage 2 E30 OTS v1.2 (PART 1)
https://www.protuningfreaks.com/collections/bootmod3

TL;DR : Great performance gains, but plagued by very buggy implementation with datalogging and DME CEL's...

Design : 4/5 - Modifies all necessary DME parameters to increase performance w/ datalogging capabilities
Installation : 2/5 - Easy and quick to install, but the wifi enet is very slow and buggy
Performance : 4/5 - only .15 ET difference but ~7mph gain in the 1/4 mile only limited by traction now.
Value : 3/5 - One of the best dollar per power value you can get on the Zupra, though the wifi enet is a waste
zFactor : 2/5 - Love the pop and bangs of the AGG tune, but all the DME CELs and bugs leaves a lot to be desired
ZTT Score : 3/5 - RECOMMENDED for the easy gains in power, but was very buggy with lots of DME and wifi issues.
Note: This is with the older OTS v1.2 tune and should not be confused with custom tunes. We'll have a review on v2.0 next time!
______________________
NOTES

Design : BM3 is a flashing SW that will change your DME to modify all manners of different parameters including boost, timing, afr, etc. You connect it directly via a OBD2 cable, or as i did with their Wifi ENET mini-hub. Flash times are quick, and datalogging has a ton of parameters to monitor.

Installation : Programming the BM3 onto the Zupra's DME was a breeze taking only several minutes, and was very kool to have some user adjustability in things like the startup roar, burble, etc. However, the wifi enet module they sell was a total hit or miss with me. Only about half the time i datalogged did it actually save the logs on their server. This was very frustrating as Im a very big data nerd.

Performance : The car absolutely wakes up with the BM3 OTS tune, to the point where I had to buy a new set of wheels and tires because i would be sliding all over the road on WOT. I saw a little gain in the 1/4 mile ET primarily impaired again by traction (look at the horrendous 2.x 60' times), but gained an astonishing 6+mph in trap speeds! You really need too be an experienced RWD w/ a judicious foot now, otherwise it's spin city!

BM3 OTS v1.2 Stage 2 (e30) + Downpipe
0-60 3.96 sec
1/8 mile 7.88 @97.76
1/4 mile 11.84 @ 124.14 (DA 584)

JB4 Map2 +4ps (91) + Downpipe
0-60 4.04 sec
1/8 mile 7.82 @93.96
1/4 mile 11.99 @ 117.75 (DA 559)

Stock (91)
0-60mph 4.43
1/8 mile 8.13 @ 88.46 mph
1/4 mile 12.57 @ 110.64 (DA 1013)

Value : BM3 packages their tune with the basic flasher and datalogger in one, then an added flash pack to get you started. The Wifi enet is also an added cost for those wanting to tune/log/etc from their phones. I like how they did this to make it modular and simplifying the cost models.
zFactor : I was not a big fan of burbles, until I heard the first time i turned on sport with the OTS Stage 2 AGG tune: POP - POP - POP! Talk about getting noticed, which is already part of the Zupras ownership experience! However, all of this gets overlooked by how buggy my experience with v1.2 tune was: I constantly had drivetrain malfunctions that caused me to limp to the side of the road and restart my car! How embarassing it is to sound of some shotgun bangs, then have to throw on your hazards to limp to the shoulder! Sigh! 😔

Final Thoughts : I really wanted to like BM3: very popular and large population on Bimmer tuning platform with immediate support for the A90. While it performed as advertised when it works, the issue I had overshadowed the tuning experience overall to the point where I was worried if i would trigger a limp mode when i floored it (and i have a notoriously lead foot).
Note: This is with the older OTS v1.2 tune and should not be confused with custom tunes. We'll have a review on v2.0 next time!81173728_10221635227417961_2970764716126765056_o.jpg80015722_10221635227217956_7081303539456147456_o.jpg80516464_10221635227097953_833987502472691712_o.jpg80029833_10221635226137929_6932668482416803840_o.jpg
 

EsTee

Moderator
Previously, we tried out the BM3 OTS v1.2 and had mixed results, so with the recent v2.0 update, we had some good seat time on it to compare....

PRO Tuning Freaks Bootmod 3 Stage 2 E30 OTS v2.0 (PART 2)
https://www.protuningfreaks.com/collections/bootmod3

TL;DR : Much more polished then BM3 v1.2, with much more power to boot!

Design : 4/5 - Modifies all necessary DME parameters to increase performance w/ a plethora of datalogging capabilities
Installation : 3/5 - Easy and quick to install, but still having issues with wifi enet logging
Performance : 4/5 - Increased power across the rev band with the times to show it!
Value : 4/5 - One of the best dollar per power value you can get on the Zupra
zFactor : 4/5 - The DME gremlins from before have been exorcised with v2.0, but strangely the pops and bangs have been seemingly toned down! 1f641.png:(
ZTT Score : 3.8/5; RECOMMENDED now that a lot of the bugs have been fixed, and more power added!

Note: This is with the new OTS v2.0 tune and should not be confused with custom tunes.
______________________
NOTES

Design : BM3 is a flashing SW that will change your DME to modify all manners of different parameters including boost, timing, afr, etc. You connect it directly via a OBD2 cable, or as i did with their Wifi ENET mini-hub. Flash times are quick, and datalogging has a ton of parameters to monitor.

Installation : Programming the BM3 onto the Zupra's DME was a breeze taking, and was very kool to have some user adjustability in things like the startup roar, burble, etc. As before, Im still having issues with the wifi enet module.

Performance : ETs have definitely gone down, but trap speeds have marginally increased. The powerband is much more usable now, though traction is still a big issue down low. One thing that we are now starting to record is the 60-130mph times (in 5th gear) since it takes a lot of the launch issues out of the equation. In this case, we saw a .15 reduction as well accounting for the increased power.

BM3 OTS v2.0 Stage 2 (e30) + Downpipe
0-60 3.68 sec
60-130mph 8.56 sec
1/8 mile 7.55 @98.31
1/4 mile 11.50 @ 124.51 (DA 290)

BM3 OTS v1.2 Stage 2 (e30) + Downpipe
0-60 3.96 sec
60-130 8.71 sec
1/8 mile 7.88 @97.76
1/4 mile 11.84 @ 124.14 (DA 584)

Stock (91)
0-60mph 4.43
1/8 mile 8.13 @ 88.46 mph
1/4 mile 12.57 @ 110.64 (DA 1013)

Value : BM3 packages their tune with the basic flasher and datalogger in one, then an added flash pack to get you started. The Wifi enet is also an added cost for those wanting to tune/log/etc from their phones. I like how they did this to make it modular and simplifying the cost models.

zFactor : The last time out with v1.2, we had a lot of dme issues. I'm glad to say that I experienced none of this in the week plus I've been driving a round testing it. However, one strange thing I've also noted, is that the pops and bangs seem to have been toned down a touch. Won't matter to most, but i actually liked it louder! :x

Final Thoughts : When v2.0 released, I was a bit pessimistic about using it due to my prior experience with v1.2. However, I am happy to note that most of the issues seen before have not surfaced in the times I've ran the tune (and I run it hard too). I still have some issues with the wifi enet, but am working with them on a resolution.81963385_10221702836988158_8508975824270000128_o.jpg
 

EsTee

Moderator
With MHD just releasing their 500whp+ e30 OTS tune, in addition to BM3's own e30 OTS tunes, Im sure a lot of people are jumping on the corn train! However, one critical component I'm not seeing a lot of talk on is a good ethanol content sensor. With this in mind, I was graciously offered a chance to buy and trial out an early proto unit unit of Titan's FF sensor kit.
(Special thanks to Ashley Seifert. Please contact her if you're interested in this kit).

Titan Motorsports A90 Supra Flex Fuel sensor kit.
https://titanmotorsports.com/

TL;DR : Easy to hook up, and works as advertised to ensure safe fuel / ethanol content for your tune.
Design : 4/5 - Quick assembly based on a popular and reliable FF sensor.
Installation : 4/5 - Very straightforward and easy install if you are logical about it.
Value : 4/5 - Having a dynamic (and semi-permanent) way of seeing your E content saves costs over doing pour in tube kits.
Performance - N/A
zFactor : 4/5 - I added a wireless BT solution on top of it to make it very easy to gauge the E content.
ZTT Score : 4 / 5 : HIGHLY RECOMMENDED and a must have for those that are contemplating going to ethanol mixes for their Zupra.
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NOTES

Design : the Titan FF kit is very simple kit consisting of a FF sensor with connecting hoses to the existing B58 fuel system. Unfortunately, there is no FF tuning support yet to fully take advantage of it now.
Installation : Installation was not difficult, though I had to consult Google for how to disconnect BMW fuel lines (very easy, like filter water hoses). Once you move some lines out of the way, it goes in about 15 minutes.
Performance : N/A
Value : while you could use a test kit, that only measures the content you put into your tank and can be costly overtime. This is a semi-permanent solution that will read content of your tank and fuel supply, so you will be dialed in for safe and consistent tune.
zFactor : There are a number of options you can do with the FF kit, and one of the things i did myself was to customize it with a BT setup so i can read it wirelessly from my phone. Unfortunately no FF tuning support yet.
Final Thoughts : When I first installed the kit, I suspected my e content was off for my E30 tune...and sure enough i was up to the mid E45s! Now that I can dial in exactly how I want the E content, i feel much more safe pushing the limits of the car and cranking up my tune. That is invaluable reassurance and a must have for those looking to go mixed ethanol.81979732_10221801223807767_4667083288295243776_o.jpg82214943_10221801221447708_4710654095130624000_o.jpg81979732_10221801223807767_4667083288295243776_o.jpg82214943_10221801221447708_4710654095130624000_o.jpg
 

EsTee

Moderator
The other big player in the Zupra tuning game presently is MHD. They've been around the Bimmer DME tuning for quite a while as well, and I took the opportunity to try them out, after all the problems i had before with my previous tune:

MHD Tuning OTS v2.0 E30 Tune
https://mhdtuning.com/

TL;DR : Well engineered tuning solution that feels very OEM like in stability and delivery. THIS is the new MKV BPU package!

Design : 4/5 - Modifies all necessary DME parameters to increase performance w/ a plethora of datalogging capabilities, with local storage of files, tunes, etc. (as opposed to cloud based)
Installation : 4/5 - Without the wifi adapter, took about 30 minutes (!!) to update, but with it, only about 3 minutes.
Performance : 4/5 - Excellent all around increase in power, with a very linear delivery.
Value : 4/5 - Strange to pay for a datalogging package, but otherwiser still a great value.
zFactor : 4/5 - Still have the pops and bangs, and options that work.
zTT Score : 4/5; HIGHLY RECOMMENDED with a very stable, yet powerful OTS tune.

Note: This is with the new OTS v2.0 tune and should not be confused with custom tunes.
______________________

NOTES
Design : MHD is a flashing SW that will change your DME to modify all manners of different parameters including boost, timing, afr, etc. You connect it directly via a OBD2 cable, or as i did with their Wifi ENET. Flash times are quick, and datalogging has a ton of parameters to monitor. One difference from the other more popular solution is that it is not cloud based, so you dont have to necessarily have a mobile internet connection at all times.
Installation : If you initially install via a wired connection, it's going to take a loooonnngggg time (30 minutes). From then on, it only take a few minutes to flash. I would advise you get the wifi adapter, so that it'll take only 3 minutes regardless.
Performance : From initial glance, it looks like we actually went slower with MHD tune. Part of this is because there is so much power now that traction is woefully limited, especially on the streets. A better indicator of the increased power is the trap speeds and 60-130mph run which decreased about .1 seconds. which translates to 19ft delta @ 130mph. Pretty significant increase.

MHD OTS v2.0 Stage 2 (e30) + DP
0-60 3.89 sec
60-130mph 8.47 sec
1/8 mile 7.65 @ 98.87
1/4 mile 11.58 @ 125.51 (DA 814)

BM3 OTS v2.0 Stage 2 (e30) + Downpipe
0-60 3.68 sec
60-130mph 8.56 sec
1/8 mile 7.55 @98.31
1/4 mile 11.50 @ 124.51 (DA 290)

BM3 OTS v1.2 Stage 2 (e30) + Downpipe
0-60 3.96 sec
60-130 8.71 sec
1/8 mile 7.88 @97.76
1/4 mile 11.84 @ 124.14 (DA 584)

JB4 Map2 +4ps (91) + Downpipe
0-60 4.04 sec
1/8 mile 7.82 @93.96
1/4 mile 11.99 @ 117.75 (DA 559)

Stock (91)
0-60mph 4.43
1/8 mile 8.13 @ 88.46 mph
1/4 mile 12.57 @ 110.64 (DA 1013)

Value : I was a little surprised that the datalogging had to be purchased separately. However, if you think of it in terms of an a la carte style that caters to tuners and tune geeks, then it makes more sense, since you only purchase what you need. Overall still a great value for the performance you get.
zFactor : A lot of the actual options they have user selectable actually WORK including pops and bangs, OEM startup roar, etc. I did experience a CEL where it noted i had a strange O2 sensor malfunction, most likely attributed to my Vibrant J defouler, but I never had this before under the other tunes. I'll look into this more later.
Final Thoughts : THIS IS THE NEW MKV BPU package; a downpipe and tune on e30! It will net you ~500whp, running easy low to mid 11s (traction limited), and a monster of a car! MHD wisely invested in their own shop Zupra, and it shows in the stability and OEM like delivery of everything! We highly recommend it!82687155_10221849470813912_7717829503883411456_o.jpg82045534_10221849470013892_4176868923859271680_o.jpg
 

EsTee

Moderator
Happy MLK Monday (after a Super Sunday where my Niners crushed those cheeseheads :X)! We don't usually do aesthetic reviews, since this is primarily a tech site, but i though this warranted a mini review in general, since it is so exquisitely made!

AMS Performance Supra A90 CF Engine Cover
https://amsperformance.com/cart/ams-performance-2020-toyota-supra-carbon-fiber-engine-cover/

TL;DR : The more you look at it, the more you'll appreciate the subtle yet exquisite design and mfg. of an OEM like CF cover w/ some weight savings to boot!

Design : 4/5 - 2x2 matte CF twill looks mesmerizingly like OEM quality made with no visible seems or imperfections anywhere!

Installation : 4/5 - Very easy install just taking off the exiting foam on the stock and transfer it to the new one and pop it right in.

Performance : NA

Value : 4/5 - Priced right at or below others even with the quality shown

zFactor : 5/5 - This isnt gloss blingy (the Zupra isnt a Honduh after all :X), but better: OEM like bling where u question where question whether it came from the factory this way !

zTT Score : 4.25/5; HIGHLY RECOMMENDED for the great looks and quality in an OEM like subtle finish!
____

Final Thoughts : I'm a function over form guy, so aesthetics isnt high on my list of mod items, but man is this thing made well. This isn't some cheap chinese made item with crooked weaves and exposed seems or the like. This thing is very OEM like, where if you saw it, you have to take a second glance and ask yourself if the owner bought a special edition piece or something. It is that well made and fits perfectly!

s/o to Josh Perez - contact him for all your AMS Performance needs!

83208124_10221908599172084_50214734695235584_o.jpg
 

EsTee

Moderator
I've been waiting for some good coils that would work with stock DSS system, but all have been seemingly hit or miss requiring cancellors and such (and that has also been a crapshoot), so got the opportunity to buy the HKS adjustable at a good price (brand used):

HKS HiperMax Adjustable Review Springshttps://www.hksusa.com/news/suspension-2020-toyota-gr-supra

TL;DR : Though a bit on the expensive side, it enhances the sportiness of the car in looks and handling, without triggering any of the sensitive electronics.

Design : 4/5 - Adjustable ride height while still utilizing the stock DSS system
Installation : 3/5 - Not difficult, but have to be careful on the plastic height sensors.
Performance : 4/5 - Much sportier ride with a firmer ride all around, but not overly harsh.
Value : 2/5 - The only adjustable springs on the market, but is a bit on the $$$ side with prices equal to most entry level coilovers.
zFactor : 4/5 - Makes the car look 10X better lowered

zTT Score : 3.4/5; RECOMMENDED for height adjustability with HKS quality and no CELs, but is a bit on the high side of $$.
____

Notes:

Design : 4/5 - Designed to be height adjustable from 0 to -50mm. It utilizes the stock DSS system so can still utilize the Sport button to run a comfortable or a lot more sporty ride. Has more aggressive spring rates of of 42.6 f /116.8 r n/mm. It also wont trigger any of the Supra's sensitive chassis electronics.

Installation : 3/5 - Will take about 3 hours or so. It is not difficult, but you have to be careful with the plastic height/leveling sensors attached to the control arms.

Performance : Qualitatively, the firmer ride makes the car feel more planted, since it eliminates some of the body roll slop by the soft stock suspension. For daily drivers, normal mode is still firm, but not harsh so you should be ok; the old Sport mode will basically be NORMAL now. T It just enhances the SPORT setting will be much firmer (2X) then before.

Value : 2/5 - Let's be honest here, $900 is a lot for springs, since you can get some entry level coilovers with that much dough. However, considering even the most top notch coil overs are still having problems with the chassis electronics, this might be a good compromise for now.

zFactor : 4/5 - I left the spring setting to be lowered at the factory setting which is like 1". I didn't want it overly low where i was scapring the front spoiler all the time (which i was doing time to time even stock). It helps the look on my car phenomenally since i run smaller diameter 17" wheels/tires all around.

Final Thoughts : I really liked the HKS from its introduction since it keeps the stock DSS system and allows me to tailor the heigh of my car, which is important to me with 4 different set of wheels/tires i run on it. And when I threw them on, I was not disappointed with a more sporty ride, better looks, and just as important, no chassis errors triggered! The only problem with these, is the costs which is well on the high side for springs, though to be fair, they are the only adjustable ones on the market. A coilover solution is definitely preferred with adjustable rebound and dampening, but there are none today that can use the DSS setup and that also doesnt excite the sensitive electronics. In the end, I'm happy i got them as they are all i expected with the HKS name and quality behind it.83676791_10222014489579278_1598065796498587648_o.jpg83164501_10222014490699306_2357134831512453120_o.jpg83788738_10222014490299296_2912774282444537856_n.jpg84275086_10222014489699281_791716056388337664_o.jpg
 

SupraTribe.com

Administrator
294
$900 might be a lot for springs, but this isn't just a set of springs. It also comes with a perch kit that allows for ride height adjustment similar to the kits Ground Control has been making for years. And those GC kits cost more than springs too... not as much as this kit, but this kit might be a little bit more refined than the GC stuff. I'd like to see if GC offers something for the A90 at some point. I've reached out to them about it but they haven't replied.
 

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