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Going to try it out when I get my X3 back too. Talked to the mechanics at my Dealership. It wont make a difference with warranty they say. The only thing is that it might take longer to warm up as it closes the flap in the second pipe when the engine is cool.
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2008 335i 6MT - Dinan tuned stge 2
1986 325es - SOLD
2012 BMW X3 35i AW on RB Msport - JB3 @ 4.0PSi over stock, 20x9F and 20x10.5R Stance SC-5ive, H&R lowering springs. - SOLD
2006 BMW 330i - //M rep kit with custom exhaust, H&R springs, 19" VMR - SOLD
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