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Mk V Supra - My Evo's Replacement?

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Old Oct 30, 2023 | 10:10 PM
  #2791  
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Originally Posted by kaj
Depends on who you ask. 50% of the people recommended against it because the computer is in the throttle body and doesn't do well with heat and vibration.
For now, the carburetor is 500 bucks and the car runs great. That saved me about $1,500 lol
Going to do a few other things to the car instead. If I have it long enough, I will probably try the EFI system.
I haven't really had any issues with the system (on customers cars). The terminator x would be the better route to go but then you have to add in an intake manifold, injectors, throttle body, efi ready gas tank.... easy $2500-3000. Still worth it to me.
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Old Oct 31, 2023 | 10:10 AM
  #2792  
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Is tuning the stock ECU on these things any where close to what we have with the evo's? In terms of what's available to average enthusiasts, not shops with walled gardens.

Is there anything like merlin's tuning guide floating around out there? Most of my research has just run into the walled garden type stuff, but I have seen there are shops out there using an openport 2.0 to do remote tuning on the newer bosch ecu's.
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Old Nov 1, 2023 | 10:46 AM
  #2793  
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Originally Posted by Biggiesacks
Is tuning the stock ECU on these things any where close to what we have with the evo's? In terms of what's available to average enthusiasts, not shops with walled gardens.

Is there anything like merlin's tuning guide floating around out there? Most of my research has just run into the walled garden type stuff, but I have seen there are shops out there using an openport 2.0 to do remote tuning on the newer bosch ecu's.
There is no free software available. For us locked ECU guys, BM3 seems to be the go to. It has a lot of built in features like flex fuel and on the fly map switching. But pretty much any route you go, you have to ship the ecu out to Fetmo for them to do something super secret to make it work. Then you are tied to whatever tuning software you purchased. If you have an unlocked ecu like Bryan, it makes things a lot easier. I think all he had to do was a bench unlock which means you dont have to send the ecu anywhere.

There are not really any good tuning guides available and from what I have heard, they arent the most simple ecu to tune. Lots of hidden stuff you have to change to make things work right. Bryan knows a lot more about this since he has been tinkering with his tune. I will start dipping into tuning my Supra once I get it back and once my intake manifold shows up.
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Old Nov 1, 2023 | 02:25 PM
  #2794  
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Originally Posted by Lumpy Sticks
I haven't really had any issues with the system (on customers cars). The terminator x would be the better route to go but then you have to add in an intake manifold, injectors, throttle body, efi ready gas tank.... easy $2500-3000. Still worth it to me.
Just looked that up. Much better. I'll go that route.
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Old Nov 2, 2023 | 02:32 AM
  #2795  
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Originally Posted by Lumpy Sticks
There is no free software available. For us locked ECU guys, BM3 seems to be the go to. It has a lot of built in features like flex fuel and on the fly map switching. But pretty much any route you go, you have to ship the ecu out to Fetmo for them to do something super secret to make it work. Then you are tied to whatever tuning software you purchased. If you have an unlocked ecu like Bryan, it makes things a lot easier. I think all he had to do was a bench unlock which means you dont have to send the ecu anywhere.

There are not really any good tuning guides available and from what I have heard, they arent the most simple ecu to tune. Lots of hidden stuff you have to change to make things work right. Bryan knows a lot more about this since he has been tinkering with his tune. I will start dipping into tuning my Supra once I get it back and once my intake manifold shows up.
That's interesting that you still have to pull the ECU and ship it out. These guys https://www.m-engineering.us/ are doing it in car with a rebranded openport 2.0. Unless I am mistaken, Porsche uses the same locked up Bosch ecu. Which leads me to believe they have figured out J2534 flashing. I'm sure in time secrets will spill and things will improve for us enthusiasts.
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Old Nov 2, 2023 | 11:38 AM
  #2796  
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Will be interesting to see if the secrets get out.

I always assumed Femto's solution requires PCB access (accessing debug port, power glitching attack, direct access to flash chips). Does anyone know if they actually open the ECU housing in the process?

But maybe there is a way to reflash over the CAN bus without access to OEM-secret cryptographic keys. If Femto has this solution, they may have kept it in-house just to avoid letting other people record the transaction and reverse engineer their secret method.

I do miss the days of Evo modding when most people were sharing information openly and the tools were cheap. The original OpenPort 1.x was literally open to the point of sharing the schematic. Granted, it was so simple that anyone could reverse engineer it in 5 minutes, but it was fun to have that openness and collaboration.
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Old Nov 4, 2023 | 09:27 AM
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I didn't even have to get mine bench unlocked.

2019 to pre June 2021 *ECU* dates are not factory locked. If the ECU is up to date from the dealer, you just need a bench unlock. You can do that in car now with hardware or visit a tuner. June 2021+ you need to send to FEMTO.

Bootmod3 is the only current software that has a full end tuning table editing solution. It's actually very robust, currently has over 4,600 defined tables and a good percentage of them even have text descriptions. There are also a couple PDFs out there that give a good overview of tuning the ECU and what certain tables do. BM3 is $595, plus you need to purchase an adapter. So not so bad price wise, TBH.

You can also use TunerPro and edit tables and create definitions, just like EcuFlash. You just need BM3 to flash the .bin (currently)





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Old Nov 5, 2023 | 04:14 AM
  #2798  
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Originally Posted by kaj
Depends on who you ask. 50% of the people recommended against it because the computer is in the throttle body and doesn't do well with heat and vibration.
For now, the carburetor is 500 bucks and the car runs great. That saved me about $1,500 lol
Going to do a few other things to the car instead. If I have it long enough, I will probably try the EFI system.
I thought the Sniper 2 moved the electronics off the TB?
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Old Nov 6, 2023 | 10:13 AM
  #2799  
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Originally Posted by OX
I thought the Sniper 2 moved the electronics off the TB?
Nope. Still built into the unit itself.
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Old Nov 7, 2023 | 11:30 AM
  #2800  
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Originally Posted by RazorLab
I didn't even have to get mine bench unlocked.

2019 to pre June 2021 *ECU* dates are not factory locked. If the ECU is up to date from the dealer, you just need a bench unlock. You can do that in car now with hardware or visit a tuner. June 2021+ you need to send to FEMTO.

Bootmod3 is the only current software that has a full end tuning table editing solution. It's actually very robust, currently has over 4,600 defined tables and a good percentage of them even have text descriptions. There are also a couple PDFs out there that give a good overview of tuning the ECU and what certain tables do. BM3 is $595, plus you need to purchase an adapter. So not so bad price wise, TBH.

You can also use TunerPro and edit tables and create definitions, just like EcuFlash. You just need BM3 to flash the .bin (currently)
That's awesome. What are the speeds and feeds of the data logging like? Maybe by the time I finally track down a MT without stupid ADM they will have OBD flashing without needing to pull the ECU first.

Last edited by Biggiesacks; Nov 7, 2023 at 11:36 AM.
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Old Nov 8, 2023 | 09:37 AM
  #2801  
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Originally Posted by Biggiesacks
That's awesome. What are the speeds and feeds of the data logging like? Maybe by the time I finally track down a MT without stupid ADM they will have OBD flashing without needing to pull the ECU first.
Pretty quick, not Evo 10 RAX fast yet but usable.

Here is a log from one session at my last event: https://www.bootmod3.net/log?id=6541...f2c672c12e374a
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Old Nov 8, 2023 | 11:31 AM
  #2802  
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So.....Kirro has been retired to the backyard patio cover, previously occupied by the Evo, until sold. Its garage space was taken by a new toy.
I have to say I feel kind of bad. I know it's basically a carport, but still.


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Old Nov 8, 2023 | 11:38 AM
  #2803  
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Originally Posted by RazorLab
Pretty quick, not Evo 10 RAX fast yet but usable.

Here is a log from one session at my last event: https://www.bootmod3.net/log?id=6541...f2c672c12e374a
That's a neat tool, thanks for sharing.

I don't think I realized how good we had it with the Evos until i started digging into tuning for modern platforms. A lot to be said for doing things in an open way so that the community can all collaborate/contribute.
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Old Nov 8, 2023 | 11:56 AM
  #2804  
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Originally Posted by kaj
So.....Kirro has been retired to the backyard patio cover, previously occupied by the Evo, until sold. Its garage space was taken by a new toy.
I have to say I feel kind of bad. I know it's basically a carport, but still.
And the new toy is?
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Old Nov 8, 2023 | 11:57 AM
  #2805  
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Originally Posted by Biggiesacks
That's a neat tool, thanks for sharing.

I don't think I realized how good we had it with the Evos until i started digging into tuning for modern platforms. A lot to be said for doing things in an open way so that the community can all collaborate/contribute.
Yea, I'm just happy one open tuning solution is available. Also, the modern ecus are such light years better than the Evo ecus it kind of makes up for the lack of knowledge sharing, for now.

There are some good threads on the F-series B58 forums of people self tuning. Reminds me of some of our historical evo threads. https://f30.bimmerpost.com/forums/sh....php?t=1648722

Ironically, a lot of ex Evo and Subaru owners.
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