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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 > Low boost after FMIC install



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      04-17-2011, 08:47 AM   #1
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Low boost after FMIC install

I have been going round and round with high boost applications leaking boost. Since installing a cheap fmic with no bead on the ic tube, I went on a witch hunt for the issue. In my travels I replaced the fmic altogether. In doing so I believe I pulled on the inlet charge manifold trying to get the coupler off and loosened it, at least from the front side turbo. I found the front side turbo v band loose and tightened it back up but I am wondering if there is a gasket, the the DP gasket for the same type fitting, that I may have damaged when pulling on the manifold tubing.

Does anyone know if there is a gasket there and if so, what its called, part #, diagram etc? I have been to the oem web site and they don't seem to isolate that part.
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      04-17-2011, 08:49 AM   #2
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ah... found it..

http://www.realoem.com/bmw/showparts...85&hg=13&fg=20
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      04-17-2011, 09:21 AM   #3
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Besides less power what other things did you notice about how the car drove? I had some work done on the car and when I got it back it has less power and when Ipress the gas down hard the caroscillates/surges like i was pressing and lifting off the acceleartor repeatedly. Trying to see what possibly could cause that
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      04-17-2011, 11:00 AM   #4
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that sounds like you popped a intercooler pipe off...my old evo did that when i would blow the intercooler piping off...
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