Boost drops after a few pulls

Avi 335 n54 · 06-30-2025, 10:55 PM

Hello everyone, I have a problem with my car and I'm hoping someone has an idea what it could be...
The car is 335 2007 mhd stage 1.
On the first few accelerations, the vehicle is 13.5 psi and suddenly after a few good accelerations, the boost drops to around 5 psi. If I turn the vehicle off and start it again...it gives a few good accelerations again and then it happens again.
when this happens, fault 30ff shadow is Shown.

there are no boost leaks.

I hope someone has some direction for me... Thank you very much.

oVeRdOsE. · 07-01-2025, 09:06 AM

you need to log the pulls and check codes.

might be anything from air, to low fuel to afr, to temps, to ignition. etc

06-30-2025, 10:55 PM	#1
Avi 335 n54 Registered 0 Rep 1 Posts Drives: Bmw 335 2007 Join Date: Jun 2025 Location: Toronto ontario iTrader: (0)	Boost drops after a few pulls Hello everyone, I have a problem with my car and I'm hoping someone has an idea what it could be... The car is 335 2007 mhd stage 1. On the first few accelerations, the vehicle is 13.5 psi and suddenly after a few good accelerations, the boost drops to around 5 psi. If I turn the vehicle off and start it again...it gives a few good accelerations again and then it happens again. when this happens, fault 30ff shadow is Shown. there are no boost leaks. I hope someone has some direction for me... Thank you very much.
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07-01-2025, 09:06 AM	#2
oVeRdOsE. Colonel 4039 Rep 2,320 Posts Drives: F25 E91N54 Audi Avnt Cayenne Join Date: May 2018 Location: mtl iTrader: (0)	you need to log the pulls and check codes. might be anything from air, to low fuel to afr, to temps, to ignition. etc
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