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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 > No boost and no codes?



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      12-31-2012, 07:24 PM   #1
Timore
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2012 BMW 335is  [5.00]
No boost and no codes?

Hey I'm getting only 4psi boost but the car isn't throwing any codes, I tried reflashing the tune but still the same. Anyone experience any problem like this? I have a 2012 335is, mods are in my sig. Thanks
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      12-31-2012, 07:39 PM   #2
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check your fmic connections and the charge pipe.
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      12-31-2012, 07:40 PM   #3
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Vacuum Lines.
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      12-31-2012, 09:57 PM   #4
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x2 to check fmic lines.
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      01-01-2013, 01:57 PM   #5
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Check FMIC and BOV area for starters since they are the aftermarket areas of the pressurized system.

It takes a good 4 seconds of Wide Open throttle and underboosting before it throws the 30FF code.
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      01-01-2013, 06:40 PM   #6
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also check the vacuum resivior, mine was cracked at the nipple and i had similar issues.
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      01-02-2013, 07:18 AM   #7
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Looks like I blew the charge pipe off the intercooler...
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      01-02-2013, 11:35 PM   #8
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I had a vacuum leak when I had similar issues.
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