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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 > Weird Low boost 30FF issue under partial throttle only



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      06-08-2016, 10:32 PM   #1
LaxIan55
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Weird Low boost 30FF issue under partial throttle only

So I had my turbos replaced under warranty a few months back. Ever since I have had them replaced I have been getting a CEL for a 30FF but only when I am like 25% throttle and passing someone on the highway in 6th or similar scenario. WOT pulls very strong and doesn't feel like I have a boost leak at all. It happens in maps 1,2, and 5 and has never done it WOT only when I am partial throttle, anyone have any ideas?

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      06-08-2016, 10:46 PM   #2
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Check for vacuum leaks. And test the boost solenoids.
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