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      03-30-2011, 09:26 AM   #6
AlpineSwift
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Drives: 2008 335Xi Coupé
Join Date: Feb 2010
Location: Castle Rock, CO

Posts: 1,907
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I already have the MD done and with Headers planned I don't expect to be messing with a new exhaust setup until after they are done. Resonator delete with the stock muffler won't do much for sound or performance. The secondary cats in conjunction with the resonator has a more noticeable gain/sound difference.
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E92 '08 335Xi 6AT - Cobb AP V2, ar design DP's, BMW PE w/Race Cats, VRSF CP w/Tial BOV, VRSF 7" FMIC, BMS DCI, BMS Cowl, Alpina TCU Flash, Turner Boost Gauge, Fully Coded, Lots of White LED's with White AE's (FBO just 2 months after Purchasing). *Ask me about coding for Denver South Area*
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