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      03-02-2013, 05:20 PM   #23
foofopps
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Drives: e90 m3
Join Date: Jun 2012
Location: Chicago

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Quote:
Originally Posted by Stohlen View Post
The 90 degree angles are really harsh on flow, the piping size is not ideal for best flow characteristics. The exhaust doesn't even use the inner two pipes of the four. 90% of the air would go out the outer tips because the air would never be able to make that turn with the velocity it'd be traveling at. Its all for looks.
No one is getting their horse power from their axel back, end of story. All exhaust systems past the axel back are for personal sound and aesthetic preference.
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