Car not hitting target boost(logs inside)

swlp · 07-27-2019, 03:00 PM

I have a custom tune on my 335i and at first everything was fine for about 1hr of driving. Now it wont hit target boost. Ive changed the boost solenoids with brand new oem ones and changed all the vacuum lines and had it smoke tested and leak tested 3 different times now. Just looking for some input on what to do next

https://datazap.me/u/james335i/log-1...og=0&data=3-22

swlp · 07-27-2019, 03:35 PM

i should also mention if i bypass the solenoids it hits target no probelm

studio54 · 07-27-2019, 03:55 PM

hey,

maybe be just a tune problem? can't you flash a MHD stage 1 or 2 to test if it's tune related?

Soden82 · 07-27-2019, 04:21 PM

When that happened to me it was because I didn't update the jb4 software to the latest version to work with my backend flash

swlp · 07-27-2019, 04:23 PM

Quote:

Originally Posted by studio54

hey,

maybe be just a tune problem? can't you flash a MHD stage 1 or 2 to test if it's tune related?

I would try but my tune is locked somehow. If I flash to mhd I can’t reflash my tune as it will give me an error

07-27-2019, 03:00 PM	#1
swlp Registered 0 Rep 3 Posts Drives: BMW 335I Join Date: Jul 2019 Location: canada iTrader: (0)	Car not hitting target boost(logs inside) I have a custom tune on my 335i and at first everything was fine for about 1hr of driving. Now it wont hit target boost. Ive changed the boost solenoids with brand new oem ones and changed all the vacuum lines and had it smoke tested and leak tested 3 different times now. Just looking for some input on what to do next https://datazap.me/u/james335i/log-1...og=0&data=3-22
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07-27-2019, 03:35 PM	#2
swlp Registered 0 Rep 3 Posts Drives: BMW 335I Join Date: Jul 2019 Location: canada iTrader: (0)	i should also mention if i bypass the solenoids it hits target no probelm
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07-27-2019, 03:55 PM	#3
studio54 Captain 201 Rep 713 Posts Drives: n54 Join Date: Feb 2017 Location: belgium iTrader: (0)	hey, maybe be just a tune problem? can't you flash a MHD stage 1 or 2 to test if it's tune related?
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07-27-2019, 04:21 PM	#4
Soden82 Major 479 Rep 1,196 Posts Drives: 2011 BMW M3 Join Date: Jun 2017 Location: Boston iTrader: (1) Garage List 2011 BMW M3 [0.00]	When that happened to me it was because I didn't update the jb4 software to the latest version to work with my backend flash __________________ 2009 BMW 335i 6MT big single (eventually) For now... MHD tuned VRSF Race IC DCI ATM exhaust
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