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      12-15-2009, 05:56 AM   #13
cstavaru
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Drives: 2009 335i M Sport Sedan 6MT
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Location: Bucharest, Romania

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Quote:
Originally Posted by XPO186 View Post
Has anyone tried a 2ndary cat delete with the BMW perf exhaust?
I think I will try, because when installing the performance exhaust, the midpipes get sectioned and its very easy to replace them. But are there sensors detecting the presence/absence of catalytic activity, like on the downpipes ?
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