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      11-17-2011, 05:42 PM   #14
Syndicategt
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Drives: 335i
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Quote:
Originally Posted by cn555ic View Post
There is slight siren..totally normal.
Sorry but that didn't sound normal. My RB's are much louder than stock and don't even make that much noise. OP, what do they sound like at WOT? It's hard to tell from just a rev. Do you see any blueish-white smoke coming out your exhaust pipes or hood?
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