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if youre doing cat back you probably wont need to hack it but if youre doing mufflers only like remus or eisenmann axle back exhaust, you will have to hack it... but seriously even if you do, its no biggie... doesnt really affect re-sale value or anything for that matter... just bring it to a reputable shop.
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Current: 2013 F10 M5 & 2016 Mini JCW
2013 GLK350 (gone), 997.1 GT3RS (gone), 2009 WRX STI (gone), e92 M3 (gone)
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