Thread: AR Downpipe Catted 5" N55
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      05-09-2012, 04:49 PM   #21
beskone
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Quote:
Originally Posted by BMW_Belgier View Post
I'm really worried about the loudness of the DP...

Any performance gain?
It will be louder for sure, not as loud as catless DP's but it will be much louder than stock.

AR's website states up to 15whp with tuning.
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