Thread: N54 Backfiring?
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      02-04-2013, 04:20 PM   #22
charlie murphy
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Drives: 2008 335i spacegrey/coral red
Join Date: Aug 2010
Location: Montclair, NJ

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2008 e92 335i  [5.00]
2004 e46 m3  [4.50]
this is normal when removing cats and happens with my 6MT all the time, i love it. op isnt talking about the "gurgle" its an actual POP. heres a video. (this particular car is FBO, RB turbos and meth but i produce the same sound FBO, stock turbos and no meth)

FBO n54. no meth. stock turbos. 14.5 psi.

Last edited by comacow02; 02-04-2013 at 04:38 PM.
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