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BMW 3-Series (E90 E92) Forum
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MHD "take a look at my log" thread
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09-26-2024, 04:31 PM | #6051 | |
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09-26-2024, 06:12 PM | #6052 |
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Yes! But this settings will not cause the concave initial boost target issue
Last edited by Yang Liu; 09-26-2024 at 06:12 PM.. |
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Today, 03:08 PM | #6053 |
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Hello guys.
My N54 335i is not making a boost and throwing a 30ff code after it was standing still in the garage for 2 years. During this time I have done some maintenance jobs, changed rod bearings, hydraulic lifters, fixed cam ledges, etc., but nothing involving turbos. Before making this log, I checked all the vacuum plumbing, and everything seems fine; no leaks were found. As far as I can read this log, my car is not making any boost, right? At the same time, vacuum applied to the wastegates is sufficient for them to operate normally, if I interpret this log right. Would that mean that one of both wastegates is just mechanically not operating and stays open? I cannot see any major boost leaks from the IC or CP plumbing. Pull was done on MHD Stage 0 tune (stock power). Any feedback that points me in the right direction is highly appreciated. https://datazap.me/u/maverx/29092024...data=3-4-20-28 |
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Today, 03:27 PM | #6054 |
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Some ideas 💡:
-check vacuum with a gauge to exclude a problem with your vacuum pump ? -disconnect vacuum hose from vacuum tank and see if you can hear vacuum typical noise. -Try to apply vacuum manually to wastegate actuator and see if they move freely. |
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