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      09-01-2010, 03:15 AM   #45
SfValley335i
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Drives: Current:135i Sold:335i sedan
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Quote:
Originally Posted by Misturrtinnie View Post
So I wonder why they split the down pipe, wouldn't it be better to do a single 3" (or bigger) piping all the way to the back and then split it there?

Probably because they can keep using the same exhaust from the n54 135i.
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