SUPRA ULTIMATE JB4 GUIDE AND LOG REVIEW (V1)

[Fireball_8]

Ok.. finally had time to upload 3 runs I did, but I had already jumped to Map2.

If someone has time, could you let me know what you think? Thanks in advance!

https://datazap.me/u/fireball8/log-1716240043?log=0&data=1-4

https://datazap.me/u/fireball8/519-log?log=0&data=1-4

https://datazap.me/u/fireball8/520-log?log=0&data=1-4

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[ColonelAdama]

Ok.. finally had time to upload 3 runs I did, but I had already jumped to Map2.

If someone has time, could you let me know what you think? Thanks in advance!

https://datazap.me/u/fireball8/log-1716240043?log=0&data=1-4

https://datazap.me/u/fireball8/519-log?log=0&data=1-4

https://datazap.me/u/fireball8/520-log?log=0&data=1-4

Boost control is good but timing is weak.

Try this map6 next. Bit lower boost and MTs seem to be happier with this target curve.

 

[ColonelAdama]

@mustafazumit's car finished - as a follow up to discussion above

BEFORE: https://datazap.me/u/coloneladama/log-1716348355?log=0&data=1-2-3-4-11-14&zoom=22-85

AFTER: https://datazap.me/u/coloneladama/log-1716348097?log=0&data=1-2-3-4-11-14

I have recently learned that the "MT" firmware is a huge help on multiple catless AT cars I have worked on.

Check out the timing (purple) improvement. Boost is finally under control with a low WGDC not achievable on released firmware.

 

[mustafazumit]

@mustafazumit's car finished - as a follow up to discussion above

BEFORE: https://datazap.me/u/coloneladama/log-1716348355?log=0&data=1-2-3-4-11-14&zoom=22-85

AFTER: https://datazap.me/u/coloneladama/log-1716348097?log=0&data=1-2-3-4-11-14

I have recently learned that the "MT" firmware is a huge help on multiple catless AT cars I have worked on.

Check out the timing (purple) improvement. Boost is finally under control with a low WGDC not achievable on released firmware.

Totally a different car from the 1st day on jb4 to the custom map 6, my guy got the sauce

 

[Erty]

I tend to start with just 2 gallons, as usually that is enough to start cleaning up ignition timing, without risking hitting the fuel ceiling. Higher E mixes may actually reduce boost targets, as B58 has an internal fuel flow limit.

I'm going to compare both logs, the E30 log which you helped me fine tune and a E20 blend. Maybe my boost target increases with a lower E blend? I still feel like the ecu calling for 11psi is quite low given my IAT are high 90's.

 

[ColonelAdama]

I'm going to compare both logs, the E30 log which you helped me fine tune and a E20 blend. Maybe my boost target increases with a lower E blend? I still feel like the ecu calling for 11psi is quite low given my IAT are high 90's.

Its probably not due to the E since your trims are generally under 40.

Here's your recent log (with wheelspin - another would help):

I can see that ECU PSI is currently about 1.5-2psi under DME BT, but with a smooth boost curve and good timing. so you can up FF a couple before your car will start to do funky MT issues. As they are happier to stay >1 psi under target.

 

[RyanA90]

Edit: @ColonelAdama is a Gem in our JB4 Supra community! In 2 days he looked at 5 different logs with 26 different pulls. We've got to the point relative to the JB+ the power is now up to redline, with no more choppy throttle and a smooth power delivery with a decent feeling on the booty dyno!

Here are the runs for those who are curious, any feedback is appreciated!
1. https://datazap.me/u/era91mt/log-1716513386?log=0&data=1-4-20
2. https://datazap.me/u/era91mt/log-1716516315?log=0&data=1-4
3. https://datazap.me/u/era91mt/log-1716569211?log=0&data=1-4
4. https://datazap.me/u/era91mt/log-1716575287?log=0&data=1-4
5. https://datazap.me/u/era91mt/log-1716580013?log=0&data=1-4

 

[Erty]

Edit: @ColonelAdama is a Gem in our JB4 Supra community! In 2 days he looked at 5 different logs with 26 different pulls. We've got to the point relative to the JB+ the power is now up to redline, with no more choppy throttle and a smooth power delivery with a decent feeling on the booty dyno!

Here are the runs for those who are curious, any feedback is appreciated!
1. https://datazap.me/u/era91mt/log-1716513386?log=0&data=1-4-20
2. https://datazap.me/u/era91mt/log-1716516315?log=0&data=1-4
3. https://datazap.me/u/era91mt/log-1716569211?log=0&data=1-4
4. https://datazap.me/u/era91mt/log-1716575287?log=0&data=1-4
5. https://datazap.me/u/era91mt/log-1716580013?log=0&data=1-4

Are you catted or catless?

 

[ColonelAdama]

Are you catted or catless?

It is high flow catted. Catless have slightly different FF and duty bias. On 91/E25


Plotted: ECU_PSI vs Boost (essentially your entire JB4 power gains - provided that timing stays up - shown purple)

Baseline run - choppy boost and throttle.

After MT firmware and tuning:

It only took a few revisions from the baseline I pulled from the last high-flow catted MT car I did.

 

[ColonelAdama]

Yeah just to add to this since the thread has been bumped:

MT cars are generally no problem to tune anymore. Have done 6-7 cars in the last month or so. The MT firmware and low WGDC method has worked well. Still not as easy as an AT car, but seems fairly repeatable.

Thanks @RyanA90 for reaching out to dial in your car! Glad we got it sorted quickly

 

[Erty]

MT cars are generally no problem to tune anymore. Have done 6-7 cars in the last month or so. The MT firmware and low WGDC method has worked well. Still not as easy as an AT car, but seems fairly repeatable.

Great to hear. Going high flow cat soon so I was curious how my map 6 settings would change. PS: I walked an auto F82 M4 last night on a 40 roll, I was quite proud of myself haha

 

[ColonelAdama]

Great to hear. Going high flow cat soon so I was curious how my map 6 settings would change. PS: I walked an auto F82 M4 last night on a 40 roll, I was quite proud of myself haha

Nice kill!! That's before we even finish getting it dialed in! We would need to re-do duty bias and FF for the new DP, but shouldn't be too many revisions to finish.

 

[RyanA90]

Are you catted or catless?

Yup Kenji 200 cell high flow DP. @ColonelAdama is a magician!

 

[Got_M]

I can confirm. He got me dialed in on some charge pipe meth and I am making some clean reliable power! Can’t recommend him enough.

 

[NotWue_]

Would anyone care to look at my logs and give me some insight. Just trying to stay reliable with decent power for a bit, anything helps
Catless, auto 2022 supra

https://datazap.me/u/notwue/log-171...4-11-25-26-27&solo=4-11-25-26-27&mark=108-165

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