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Mirvi g Mirvi g is offline
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Car: 2013 m135i
Default Newb and boost issues. (low/fluctuating boost) solved - 06-16-2019, 07:03 AM

Hello and thanks for this forum. Ive read a lot here and learnt a lot to. I think the settings in my JB4 is wrong thou and I don't know how to get It right.

At low throttle the car fluctuate in power/boost. Sometimes it show cel and faultcode low boost.

At wot the car seems to hesitate, pickup boost/power and then lower it. Ill post a few logs from today and it would be perfect if any of you have an idea of what might be wrong.

The car is an 2013 f20 M135i manual.

Last edited by Mirvi g; 06-19-2019 at 11:11 AM..
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Mirvi g Mirvi g is offline
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Default 06-16-2019, 07:05 AM

forgot the logs...
Attached Files
File Type: csv 190616_1501.csv (10.1 KB, 13 views)
File Type: csv 190616_1502.csv (10.6 KB, 9 views)
File Type: csv 190616_1512.csv (5.7 KB, 7 views)
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Dave @ BMS/Fuel-It!'s Avatar
Dave @ BMS/Fuel-It! Dave @ BMS/Fuel-It! is online now
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Default 06-17-2019, 05:20 AM

Just to confirm- traction control fully off?



http://www.fuel-it.biz/

e92 AT 335xi 2.0
Doc Race Kit 6062
Fuel-It!Platinum DIY PI Kit + Stage 2BL
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Mirvi g Mirvi g is offline
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Default 06-17-2019, 06:16 AM

I've tried both with same problem.
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Mirvi g Mirvi g is offline
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Default 06-19-2019, 11:09 AM

So i've tested a few things (vacum hoses, actuator) and nothing helped. Then i upploaded an old firmware in the Jb4 and now the car has plenty of boost.

Idk how but i'm happy it works now.

Thanks for all help
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sicknick530 sicknick530 is offline
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Car: 2011 BMW e92 n55
Default 07-09-2019, 08:07 PM

Do I need to install just the latest firmware or all the previous updates in order?
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