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BMW 3-Series (E90 E92) Forum
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Boost Leak??
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11-11-2011, 10:32 PM | #1 |
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Boost Leak??
So im not really sure what is going on im guessing a boost leak but im not sure the car is not throwing any codes no CEL at all But when i step on it i hear the turbo spooling very loud almost as if i maybe have an open waste gate and the the BOV will go off but not be very loud at all... what could this be? I do have an aftermarket charge pipe and BOV but no connections seemed to me loose at all should i jsut take my car to the deal as its still under warranty or will they say my warranty is void due to the aftermarket charge pipe and BOV?
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11-11-2011, 11:13 PM | #2 |
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Drives: e92 335i 6MT
Join Date: May 2011
Location: Toronto
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Are you running a tune? Do you notice a drop in performance?
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11-11-2011, 11:35 PM | #3 |
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Check all the braided vacuum lines. That was my problem. With a JB3 I was only boosting at 3-4 PSI on Map 3. Installed my JB4 and scanned for codes and got 30FF. Problem was one of the braided vacuum hoses had dried up and broken off of the nipple. If it is one of those lines then just go to auto parts store and buy vacuum/washer hose that is 5/32'' in thickness..
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11-12-2011, 10:40 AM | #4 | |
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no not running any tune and yes it seems like a bit of a drop in performance
Quote:
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11-12-2011, 03:07 PM | #5 |
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Look at the diverter valve lines you see they are rubber covered by a braided fabric. Now look around your engine bay and you will see the same hoses in various other places ie right of the engine cover towards the front of the car there are 2 lines there.. that is where mine popped out. Are you sure you are leaking boost? Do you have a boost gauge to see if you are dropping off boost or not?
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11-14-2011, 06:51 AM | #7 |
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You should also check the charge pipe area all the way to the FMIC. Its prone to issues there but doesn't usually fail under stock boost.
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