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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 > Video: vaccum leak



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      10-03-2021, 04:50 PM   #1
syntax
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Video: vaccum leak

https://youtube.com/shorts/2k5uxwAJPJk?feature=share
Feels like I have less low end grunt. Got vrsf intakes, chargepipe, fmic, mhd 1+. The hell is this. Doesn't seem to have a problem past 4k rpm
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      10-03-2021, 04:58 PM   #2
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Quote:
Originally Posted by syntax View Post
https://youtube.com/shorts/2k5uxwAJPJk?feature=share
Feels like I have less low end grunt. Got vrsf intakes, chargepipe, fmic, mhd 1+. The hell is this. Doesn't seem to have a problem past 4k rpm
Best to do a long so we can see what's going on.
3rd gear pull
TC all the way off
2500 to redline shift and complete
Uploaded to data.zap

I was one stage 1+ for a long time and it rips. What version you running? Could be a boost leak, vacuum leak, boost solenoids etc.
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      10-04-2021, 02:24 AM   #3
Saif2018
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Quote:
Originally Posted by syntax View Post
https://youtube.com/shorts/2k5uxwAJPJk?feature=share
Feels like I have less low end grunt. Got vrsf intakes, chargepipe, fmic, mhd 1+. The hell is this. Doesn't seem to have a problem past 4k rpm
All I can tell is. Sounds like something is loose, may well be a boost leak but do a proper 3rd gear log as suggested.
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