SUPRA ULTIMATE B58 JB4 GUIDE AND LOG REVIEW (V1)

[Imcray]

Could anyone help me with checking this Map 1 log I would appreciate it.
Just installed today and I have no experience with this.
MT 3.0, catless dp, rk track single exit, injen evolution intake, 91(in Nevada)
If anyone has a similar setup and wants to send me their setup for map 6 that would be nice too.

https://datazap.me/u/imcray/first-log?log=0&data=1-2-15&solo=2-5-9-13&mark=0-29-7

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[ColonelAdama]

Could anyone help me with checking this Map 1 log I would appreciate it.
Just installed today and I have no experience with this.
MT 3.0, catless dp, rk track single exit, injen evolution intake, 91(in Nevada)
If anyone has a similar setup and wants to send me their setup for map 6 that would be nice too.

https://datazap.me/u/imcray/first-log?log=0&data=1-2-15&solo=2-5-9-13&mark=0-29-7

Looks alright. You can update to V24 firmware or newer to clean up that throttle a bit, and may need to move FF up a little. No point in map 6 with that fuel, it is already having some corrections on Map 1 (that are OK)

 

[Imcray]

Looks alright. You can update to V24 firmware or newer to clean up that throttle a bit, and may need to move FF up a little. No point in map 6 with that fuel, it is already having some corrections on Map 1 (that are OK)

Car feels a bit better with those changes thank you!

 

[Dven11]

@ColonelAdama I upgraded my board with the Fuel Pressure upgrade kit. I ran into some issues with the chip, but Terry got that taken care of for me. My JB4 is reading E34 but the Fuel It app is reading E29. I have attached the logs here. Let me know what you think!

https://datazap.me/u/dven11/log-1736826561?log=0&data=1-4
https://datazap.me/u/dven11/log-1736826715?log=0&data=1-4

 

[Bug2th]

@ColonelAdama I upgraded my board with the Fuel Pressure upgrade kit. I ran into some issues with the chip, but Terry got that taken care of for me. My JB4 is reading E34 but the Fuel It app is reading E29. I have attached the logs here. Let me know what you think!

https://datazap.me/u/dven11/log-1736826561?log=0&data=1-4
https://datazap.me/u/dven11/log-1736826715?log=0&data=1-4

Curious what kind of issues? I have the new board and sensor too but haven’t really done much new tuning yet (auto though but running e30 ish and wmi. I have the fuelit and jb4 has always read 3-5 pts higher.

 

[Dven11]

Curious what kind of issues? I have the new board and sensor too but haven’t really done much new tuning yet (auto though but running e30 ish and wmi. I have the fuelit and jb4 has always read 3-5 pts higher.

the chip on the new board required an update. This caused the car to throw a CEL and cut boost. The idle was also high. All it needed was an updated chip and I was good to go. Super easy fix.

 

[ColonelAdama]

@ColonelAdama I upgraded my board with the Fuel Pressure upgrade kit. I ran into some issues with the chip, but Terry got that taken care of for me. My JB4 is reading E34 but the Fuel It app is reading E29. I have attached the logs here. Let me know what you think!

https://datazap.me/u/dven11/log-1736826561?log=0&data=1-4
https://datazap.me/u/dven11/log-1736826715?log=0&data=1-4

looks pretty good, add some boost up top now that you have octane

map6_15	map6_20	map6_25	map6_30	map6_35	map6_40	map6_45	map6_50	map6_55	map6_60	map6_65	map6_70
1​	1.5​	2​	3​	3.5​	4​	4​	5​	6​	6​	5​	4​

 

[Dven11]

looks pretty good, add some boost up top now that you have octane

map6_15	map6_20	map6_25	map6_30	map6_35	map6_40	map6_45	map6_50	map6_55	map6_60	map6_65	map6_70
1​	1.5​	2​	3​	3.5​	4​	4​	5​	6​	6​	5​	4​

I will try and report back. I have to do 4th gear pulls since its cold out and the car loses traction easily already lol

 

[Dven11]

looks pretty good, add some boost up top now that you have octane

map6_15	map6_20	map6_25	map6_30	map6_35	map6_40	map6_45	map6_50	map6_55	map6_60	map6_65	map6_70
1​	1.5​	2​	3​	3.5​	4​	4​	5​	6​	6​	5​	4​

Here is the log.:

https://datazap.me/u/dven11/log-1736890836?log=2&data=1-4-5-6-8-9-11-14-18-20-25-26-27-28-29

Let me know what you recommend @ColonelAdama . Thank you!

 

[ColonelAdama]

Here is the log.:

https://datazap.me/u/dven11/log-1736890836?log=2&data=1-4-5-6-8-9-11-14-18-20-25-26-27-28-29

Let me know what you recommend @ColonelAdama . Thank you!

map6_15	map6_20	map6_25	map6_30	map6_35	map6_40	map6_45	map6_50	map6_55	map6_60	map6_65	map6_70
1	1.5	2	3	3.5	4	4	5	6	5.5	4	3

Looks good, just gonna take a little boost off the top to help timing.

 

[swrdply400mrelay]

Long time lurker here with the MT and just wanted to say thanks @ColonelAdama and others for starting this thread. I just purchased the JB4 with the FP control although I dont plan on running ethanol at this time. I still have to install my AA catted downpipe and will most likely install the JB4 at the same time. Looking forward to the firmware update that will most likely my life easier.

Forgot to ask, do the instructions include which is the FP control connector? It hasn't been updated online. TIA

 

[ColonelAdama]

Forgot to ask, do the instructions include which is the FP control connector? It hasn't been updated online. TIA

Here you go! I will update the main post with "FP upgrade" stuff once I am more confident about best settings/etc. I will say that I am finding FOL (FP adjustment) really shouldn't exceed 90ish for most cars. dme will start to be weird with boost targets since it thinks fuel pressure is lower than it actually is.

https://www.jb4tech.com/forum/model...30-jb4-fuel-pressure-control-for-the-gen2-b58

 

[swrdply400mrelay]

Here you go! I will update the main post with "FP upgrade" stuff once I am more confident about best settings/etc. I will say that I am finding FOL (FP adjustment) really shouldn't exceed 90ish for most cars. dme will start to be weird with boost targets since it thinks fuel pressure is lower than it actually is.

https://www.jb4tech.com/forum/model...30-jb4-fuel-pressure-control-for-the-gen2-b58

Thanks! Really contemplating JB4 for the MT, but reading this thread, people still don't receive the correct firmware, and not knowing how to install makes me nervous. But I'm getting closer to pull the trigger...

 

[ColonelAdama]

Thanks! Really contemplating JB4 for the MT, but reading this thread, people still don't receive the correct firmware, and not knowing how to install makes me nervous. But I'm getting closer to pull the trigger...

I'm not sure what firmware they are shipping them with now, but you can make sure you flash the correct version before even starting the car. It takes 3 minutes, and right from the app over bluetooth.

The install is easy! usually the effort is dialing in the tune on MTs. Can take a handful or revisions, gets tougher the more power you push. Lots of pulls and logging.

 

[Dven11]

Thanks! Really contemplating JB4 for the MT, but reading this thread, people still don't receive the correct firmware, and not knowing how to install makes me nervous. But I'm getting closer to pull the trigger...

The install is extremely easy. If you are in Los Angeles or nearby I can assist.

Terry has fixed the issue I had with mine. If you order one now, you will be receiving the most up to date chip that works with the new version.

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