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      05-03-2017, 06:15 PM   #29
ndinh
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Drives: 640i GC, X5
Join Date: Jul 2015
Location: Los Angeles

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Quote:
Originally Posted by Craigas View Post
Installing M6 cat back, I may be in, if its quiet and reasonable price but sounds good when into the throttle. Show me how an I may be in.
With the M6 exhaust, it'll sound identical to how your car is right now, quiet, with the valves closed. On throttle with the valves open, you'll get a nice, deep tone, not raspy. As far as adding hp, probably negligible.
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