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]

Ok here is my first set of logs:

https://datazap.me/u/era91mt/log-1716513386?log=0&data=1-4-20

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