SUPRA ULTIMATE B58 JB4 GUIDE AND LOG REVIEW (V1)

[ColonelAdama]

https://datazap.me/u/bayeauxsupra/log-1745363331?log=0&data=1-4

9.5 gallons of 93
3.8 gallons of E85

Map 2. 3rd gear pull. Car feels slower. Fuel pressure sensor installed. Changed FOL to 70. No other changes. Running latest firmware @ColonelAdama advised me to run.

i meant V28+ for firmware, but it looks good. Just reduce duty in increments 3-5 in RPM ranges until ecu_psi sits about 1 psi below dme_bt the entire pull. ie. add some duty at 5500, reduce 4000-4500

Sponsored

 

[BayeauxSupra]

Which kit are you guys running? @ColonelAdama I may need a translation for your last post? “add some duty at 5500, reduce 4000-5000

 

[Got_M]

Running the jb4 with fuel sensor set at 70 and fuel-it (this is only for showing e content in jb4) but I also am running water/meth injection and did the DAW hypercore upgrade, AA dp. Running around e30-35 w/91 oct and hitting 27psi and still under 45 trims worst case. Feels really good.

Any 60-130 times?

 

[Got_M]

Hey I’m down to 1 bar of fuel. 9 gallons of 93 and 4 gallons of E85?

Fyi you don't need a E content sensor to be fast, I just mix my shit like a mad scientist. ?

 

[Got_M]

Which kit are you guys running? @ColonelAdama I may need a translation for your last post? “add some duty at 5500, reduce 4000-5000

He is saying to adjust your duty/fuel up and down 2-3 until your boost level at those rpm’s during a log read 1 psi off target boost. Make sense? Reduce 4000,4500,5000 by 2-3. Raise duty at 5500 by 2-3.

 

[BayeauxSupra]

He is saying to adjust your duty/fuel up and down 2-3 until your boost level at those rpm’s during a log read 1 psi off target boost. Make sense? Reduce 4000,4500,5000 by 2-3. Raise duty at 5500 by 2-3.

Car in diagnostic mode. Thx btw

 

[Bug2th]

Not yet. Haven’t been to the track in a while and don’t have a good/safe place near by.

Any 60-130 times?

 

[ColonelAdama]

Car in diagnostic mode. Thx btw

you've got the right idea. You can set duty 4000 and 4500 to like 45, 5500 to 55. See how it looks based on that ecu_psi and dme_bt criteria and go from there.

If you just want me to do the custom map, PM me and we can work that out. Been busy so just doing custom maps for paying folks rn

otherwise all the info to custom tune yourself is here

 

[ColonelAdama]

https://datazap.me/u/coloneladama/log-1745430389?log=0&data=1-2-4-11-25-26-27-28-29

Non m40i "low output" B58 (540i) responding nicely to the Jb4 FP upgrade, allowing nearly 10 psi additive on E40. double stock boost! Right on the limit of JB4 capabilities for the platform/fuel. Previously only 6psi additive without FP add on, so that is gains well over 50whp for the upgrade, and over 100whp compared to stock.

Reference log of MHD OTS E40 on a Supra
https://datazap.me/u/coloneladama/log-1745432189?log=0&data=1-2-4-11-25-26-27-28-29

I'd wager similar power figures, not far off on the JB4. Can definitely get you 90% of an unlock for <$600.

 

[BayeauxSupra]

you've got the right idea. You can set duty 4000 and 4500 to like 45, 5500 to 55. See how it looks based on that ecu_psi and dme_bt criteria and go from there.

If you just want me to do the custom map, PM me and we can work that out. Been busy so just doing custom maps for paying folks rn

otherwise all the info to custom tune yourself is here

Got it thx.

Weather has been crappy lately and need to start getting ready for track day next weekend. Not in the Supra

 

[FLtrackdays]

Got it thx.

Weather has been crappy lately and need to start getting ready for track day next weekend. Not in the Supra

What car you tracking?

 

[BayeauxSupra]

What car you tracking?

FK8

 

[BayeauxSupra]

Map 4 felt quick initially but it’s slower than Map 2 according to dragy. I have about 4.3 gallons of ? in the tank.


https://datazap.me/u/bayeauxsupra/log-1745711869?log=0&data=1-4&solo=4

 

[ColonelAdama]

Map 4 felt quick initially but it’s slower than Map 2 according to dragy. I have about 4.3 gallons of ? in the tank.


https://datazap.me/u/bayeauxsupra/log-1745711869?log=0&data=1-4&solo=4

looks fine I'm just not the biggest fan of absolute maps since you really need to IAT spoof with them,

 

[Supma]

Hey ColonelAdama, I’m new here. I’d appreciate if you could take a look at my log. The log has a pull from 2nd to 3rd. Then another pull starting from 3rd.

From what I see, everything looks ok. There is some slight throttle closures but I can’t say I can feel them to be honest. Drivability seems similar to stock. TC was on (forgot to turn it off before I started the log).

https://datazap.me/u/supma/log-1745874439?log=0&data=&solo=15-19&mark=63-60-66

GR Supra Manual
- Kenji 200 cell DP
- 92 Octane
- JB4 MAP 1

Sponsored