SUPRA ULTIMATE B58 JB4 GUIDE AND LOG REVIEW (V1)

[Jofro6]

new app goes with the new bt adapter only. if you already have a jb4 with bluetooth, no need for the new one.

Thanks. I ordered my JB4 in December with BT and the FP addon. Assuming that is the old bt that doesn't need the new app

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[ColonelAdama]

Thanks. I ordered my JB4 in December with BT and the FP addon. Assuming that is the old bt that doesn't need the new app

Correct

 

[Chenzo]

Hey guys, i just installed a hypercore on my 21 m340. Did some logs, and if you wouldn't mind looking them over. i am concerned about timing corrections if anyone could give me insight on how I can lower them.

Here's what's done to the car
- Dinan intake
-DAW Turbo inlet
-DAW hypercore turbo
-AA highflow DP
-Awe track exhaust
-BMS fuel pressure connector.
-AA chargepipe
-Sparkplugs are gapped to .22

cars on map 5 E33

https://datazap.me/u/chenzo/log-1751722681?log=0&data=1-4

 

[ColonelAdama]

Hey guys, i just installed a hypercore on my 21 m340. Did some logs, and if you wouldn't mind looking them over. i am concerned about timing corrections if anyone could give me insight on how I can lower them.

Here's what's done to the car
- Dinan intake
-DAW Turbo inlet
-DAW hypercore turbo
-AA highflow DP
-Awe track exhaust
-BMS fuel pressure connector.
-AA chargepipe
-Sparkplugs are gapped to .22

cars on map 5 E33

https://datazap.me/u/chenzo/log-1751722681?log=0&data=1-4

timing looks great to me, map is fine

 

[Chenzo]

timing looks great to me, map is fine

Should I not be worried about the ign 10 across 1-6? Genuine question, still learning about jb4. Also not sure how jb4 measures timing.

 

[5150.MKV]

Finally got the catted downpipe on!

MT
E20
CAI
AWE Track Exhaust
AA Catted Downpipe

https://datazap.me/u/samedice/catted-downpipe?log=0&data=1-18&solo=4-18&mark=26

Thanks for all the help! I know you prefer to do MTs in the DMs so lmk if you’d rather post them there!

 

[ColonelAdama]

Finally got the catted downpipe on!

MT
E20
CAI
AWE Track Exhaust
AA Catted Downpipe

https://datazap.me/u/samedice/catted-downpipe?log=0&data=1-18&solo=4-18&mark=26

Thanks for all the help! I know you prefer to do MTs in the DMs so lmk if you’d rather post them there!

Looks pretty good actually.

Turn down duty5000 and duty6000 by 2 each, and get the E content up to E25

 

[5150.MKV]

Looks pretty good actually.

Turn down duty5000 and duty6000 by 2 each, and get the E content up to E25

Revised!

https://datazap.me/u/samedice/log-1752224124?log=0&data=1-25-26-27-28-29

 

[ColonelAdama]

Revised!

https://datazap.me/u/samedice/log-1752224124?log=0&data=1-25-26-27-28-29

looks good, just little duty adjustments at this point

duty_15	duty_20	duty_25	duty_30	duty_35	duty_40	duty_45	duty_50	duty_55	duty_60	duty_65	duty_70
35​	35​	35​	35​	40​	38​	40​	45​	52​	52​	59​	59​

 

[i3igpete]

Should I not be worried about the ign 10 across 1-6? Genuine question, still learning about jb4. Also not sure how jb4 measures timing.

In general, ignition timing will do its thing and it changes with boost and gear and IAT (and which way the wind is blowing in cuba during that particular pull). We are primarily watching for knock by making sure all cylinders stay mostly aligned and rising.

 

[ColonelAdama]

In general, ignition timing will do its thing and it changes with boost and gear and IAT (and which way the wind is blowing in cuba during that particular pull). We are primarily watching for knock by making sure all cylinders stay mostly aligned and rising.

yep, actually the newer firmware updates that change how ign1-6 are read is helpful in this regard. easier to tell the difference between low timing from IATs and actual corrections.

 

[ColonelAdama]

great example of how an AT car should look on E30 (91). ecu_psi about 1-1.5psi below dme_bt. flat trims, perfect timing. etc. Stock dp.

https://datazap.me/u/coloneladama/l...-4-9-11-14-15-25-26-27-28-29&solo=9&zoom=0-30

 

[deadhead]

Hey all, I'm pretty new to JB4, but was wondering if someone could review my logs? My Supra is stock, but I'm installing a downpipe soon. The best pump gas I could find near me is 93 octane with 10% ethanol content.

It felt good, but I want to make sure there's no issues (knock, etc) for when I move to map 2 after downpipe install. Let me know if you think I should make any changes or move to higher ethanol content.

For this log, I I turned the corner and accelerated until I hit high rpms, shifted to second and did the same again, then just cruised. Anything out of the ordinary?
https://datazap.me/u/deadfulhead/log-1752721053?log=0&data=1-4

I'm on Map 1, but purchased jb4 used, reset everything to default and set the boost failsafe to 23psi.

 

[ColonelAdama]

Hey all, I'm pretty new to JB4, but was wondering if someone could review my logs? My Supra is stock, but I'm installing a downpipe soon. The best pump gas I could find near me is 93 octane with 10% ethanol content.

It felt good, but I want to make sure there's no issues (knock, etc) for when I move to map 2 after downpipe install. Let me know if you think I should make any changes or move to higher ethanol content.

For this log, I I turned the corner and accelerated until I hit high rpms, shifted to second and did the same again, then just cruised. Anything out of the ordinary?
https://datazap.me/u/deadfulhead/log-1752721053?log=0&data=1-4

I'm on Map 1, but purchased jb4 used, reset everything to default and set the boost failsafe to 23psi.

try to log from 2500-6500 in 3rd flat out

 

[i3igpete]

For this log, I I turned the corner and accelerated until I hit high rpms, shifted to second and did the same again, then just cruised.

I see in the log you never actually put your foot all the way down, so the jb4 effectively did nothing. 3rd or 4th, foot all the way down. If you start to spin or hit traction control, try again.

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