[boost4breakfast]

Anyone realize any true gains on dragy or dyno after installing JB4 on the 21 models?

[EgemenComertoglu]

i have got 2021 F90M5 , and i m curios about it also.

[invidiousf90]

subbed

[luchocamp]

yes, from 11.1@124mph to 10.4@131mph map1 or map2 using 93 octane

[Quinn A]

I will post up my 60-130 once i do the after, but seat of the pants the increase in power is huge, first and second gear are violent once boost hits, like i have to hold onto the wheel.

[AHall]

Originally Posted by Quinn A

I will post up my 60-130 once i do the after, but seat of the pants the increase in power is huge, first and second gear are violent once boost hits, like i have to hold onto the wheel.

I would be interested in seeing the change in the torque curve. Sounds like a significant increase.

[Kponti]

Originally Posted by luchocamp

yes, from 11.1@124mph to 10.4@131mph map1 or map2 using 93 octane

Great numbers for a 2021!!! Is this a Competition or base?
Was this on pump gas or something else? Any other mods?

Sorry for pummeling you with all the questions lol

[boost4breakfast]

Will install JB4 and do dragy this weekend. have been enjoying the car stock

[Stano]

2021 comp.
Noticed no gains with only Tmap sensors plugged in.
10.92 Stock
10.88 Map 1 TMap only
10.47 Map 2 Tmap + EWG

All runs on draggy with 93oct and snow tires

[boost4breakfast]

Originally Posted by Stano

2021 comp.
Noticed no gains with only Tmap sensors plugged in.
10.92 Stock
10.88 Map 1 TMap only
10.47 Map 2 Tmap + EWG

All runs on draggy with 93oct and snow tires

when doing install, is it wise to plug Tmap only first and send logs to Burger?

[schnell1982]

Originally Posted by boost4breakfast

when doing install, is it wise to plug Tmap only first and send logs to Burger?

I would suggest their own support forum N54tech.com for technical issues. Terry is active on it as well as most of the JB4 clients
The harness connections will be installed based on which map and fueling, etc you are currently using.
I personally began with all connections except the waste gate sensors.
Multiple logs with Terry and currently running Map 3 with 6 gallons E85 mixed with California 91

[e92hunter]

Install for the JB4 seems difficult with the wastegate sensors. Anyone know someone that can assist with this or teach me once in SoCal? I likely need to learn once so I can uninstall before dealer trips too.

[boost4breakfast]

Originally Posted by Stano

2021 comp.
Noticed no gains with only Tmap sensors plugged in.
10.92 Stock
10.88 Map 1 TMap only
10.47 Map 2 Tmap + EWG

All runs on draggy with 93oct and snow tires

I saw your post on N54tech, are you still getting drivetrain malfunction error codes?

[boost4breakfast]

Originally Posted by schnell1982

I would suggest their own support forum N54tech.com for technical issues. Terry is active on it as well as most of the JB4 clients
The harness connections will be installed based on which map and fueling, etc you are currently using.
I personally began with all connections except the waste gate sensors.
Multiple logs with Terry and currently running Map 3 with 6 gallons E85 mixed with California 91

after the logs with Terry with the TMap, you connected the EWG and all was smooth?

[BMWDriverX]

Originally Posted by schnell1982

I would suggest their own support forum N54tech.com for technical issues. Terry is active on it as well as most of the JB4 clients
The harness connections will be installed based on which map and fueling, etc you are currently using.
I personally began with all connections except the waste gate sensors.
Multiple logs with Terry and currently running Map 3 with 6 gallons E85 mixed with California 91

Did you end up connecting the EWG sensors?

[schnell1982]

Originally Posted by boost4breakfast

after the logs with Terry with the TMap, you connected the EWG and all was smooth?

I am still running without the wastegate sensors installed
Car runs perfect
In the installing instructions it is noted to leave them not connected until needed due to the possibility of having a fault code if they are not being used as they are intended to

1 thing with JB4 is that each car will run differently even with the same mods. That's where the logging comes into play
Here is recent info from Terry's support forum

https://www.n54tech.com/forums/showt...=52314&page=33

Some guys are running without but with the recent version 11 software it seems to be setting various fault codes.
This weekend I'll be updating version 11 and making logs with and without the waste gate connectors. Most likely they will stay installed. But for purpose of my original replies; I have not needed to have them installed with current configuration

[schnell1982]

Originally Posted by BMWDriverX

Did you end up connecting the EWG sensors?

Nope. Still not connected

[Stano]

Yea I still can get drivetrain errors. I emailed my logs to them and they said everything looks good as far as logs go but mentioned nothing on the errors I get. I didn't press the issue any further because I've been busy with work and wasn't thinking about it. For that most part I can avoid having the error pop up. It's under certain conditions I've had them thrown.

I ran the car 2-3 weeks with just the TMAP plugs and felt no increase in power. Car is bone stock besides the jb4. I tried map 1 and 2 and noticed nothing. Car wasnt throwing errors and felt stock smooth.
Once I plugged in the EWG connectors the performance gains were very noticeable.

Once I get some time I wanted to log the car and try to make the error pop up and email it to them and see what they say. Codes thrown are usually similar like 120719, 12710,12071A with no description listed. Searching them I don't come up with anything either.

[schnell1982]

Originally Posted by Stano

Yea I still can get drivetrain errors. I emailed my logs to them and they said everything looks good as far as logs go but mentioned nothing on the errors I get. I didn't press the issue any further because I've been busy with work and wasn't thinking about it. For that most part I can avoid having the error pop up. It's under certain conditions I've had them thrown.

I ran the car 2-3 weeks with just the TMAP plugs and felt no increase in power. Car is bone stock besides the jb4. I tried map 1 and 2 and noticed nothing. Car wasnt throwing errors and felt stock smooth.
Once I plugged in the EWG connectors the performance gains were very noticeable.

Once I get some time I wanted to log the car and try to make the error pop up and email it to them and see what they say. Codes thrown are usually similar like 120719, 12710,12071A with no description listed. Searching them I don't come up with anything either.

Email Terry with the codes you are getting and let him know what you are experiencing. He is really good at getting back in a timely manner. Did they send you any log adjustments to make after what you sent them ?

[Quinn A]

Does anyone else have a bluetooth connection?

And if so does it keep reverting to map 0? I stay on map 2 but every few days despite no codes or me even touching the app it goes back to 0, super weird, and immediately noticeable

[LongBeachDinanFan]

Originally Posted by Quinn A

Does anyone else have a bluetooth connection?

And if so does it keep reverting to map 0? I stay on map 2 but every few days despite no codes or me even touching the app it goes back to 0, super weird, and immediately noticeable

App has something called last safety that tells you why the JB4 turned you back to factory tuning. For example if boost is higher than the limit you set in the app.

[Quinn A]

Originally Posted by LongBeachDinanFan

App has something called last safety that tells you why the JB4 turned you back to factory tuning. For example if boost is higher than the limit you set in the app.

gotcha. will tinker with it.