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      01-05-2013, 12:49 PM   #16
Cozy's Avatar
Drives: E82 135i
Join Date: Mar 2011
Location: Surrey, England

Posts: 1,489
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Originally Posted by Tee-Dub View Post
I keep reading how restrictive the 135's stock exhaust is though. I wonder if they are referring to the catted mid-pipe on earlier years (mine) or is it the axle back that is so restrictive? For those of you that installed cat-less downpipes but kept the stock section, did you have any issues with the secondary cats getting clogged up?
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