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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > New turbos installed - now code 3100 boost pressure control



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      09-03-2021, 01:42 PM   #1
WickedB
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New turbos installed - now code 3100 boost pressure control

Hi all,

Recently had new VTT turbos installed w/ the upgraded billet compressor wheel, now at WOT the car often goes into limp mode and throws a 3100 code, boost pressure control, deactivation. Looking at the logs I'm getting throttle closure to ~30% when pedal is at 100% -- seems to be overshooting boost target as well.

On MHD Stage 1+ tune; I've been reading through forum posts trying to narrow it down but figured I'd post in case someone can point me in the right direction. Going to try to reset adapations now.

Thanks,
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      09-03-2021, 01:51 PM   #2
N54_e90
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You probably need a custom tune.....
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      09-03-2021, 01:53 PM   #3
WickedB
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Quote:
Originally Posted by krazythedon View Post
You probably need a custom tune.....
I'm not opposed to that... who is doing them these days? I've been out of the loop for a bit...
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      09-03-2021, 02:18 PM   #4
Tyc0
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Yeah sounds like your over boosting causing limp, definitely need custom tune. These are tuners recommended to me by Rob from RB Turbo. These are all very good tuners. I went with Justin Hubenak because it was the cheapest and I still got a really nice tune.


Wedge Performance (Ken)
BQ Tuning (Dmitri)
RFP Tuning (Dean)
Twisted Tuning (Justin)
David Shoupe Tuning (David)
V8Bait (Justin Hubenak) Great Private Tuner: jrhubenak@gmail.com
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      09-03-2021, 02:53 PM   #5
Saif2018
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Quote:
Originally Posted by WickedB View Post
Hi all,

Recently had new VTT turbos installed w/ the upgraded billet compressor wheel, now at WOT the car often goes into limp mode and throws a 3100 code, boost pressure control, deactivation. Looking at the logs I'm getting throttle closure to ~30% when pedal is at 100% -- seems to be overshooting boost target as well.

On MHD Stage 1+ tune; I've been reading through forum posts trying to narrow it down but figured I'd post in case someone can point me in the right direction. Going to try to reset adapations now.

Thanks,
Mate don't run OTS maps with uprated hybrid turbos, the maps are not designed for them.

Custom tune is a must with hybrids
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