View Single Post
      04-05-2010, 03:57 PM   #39
BimmerPost Supporting Vendor

Drives: 07335i
Join Date: Dec 2008
Location: Earth

Posts: 14,515
iTrader: (86)

Originally Posted by shiv@vishnu View Post
Reasonably well it seems. I haven't done any controlled testing of it though. The only reason I know how bad the 135 single exhaust system is was from back in the day when we tuned our first one. Up top, It was 20-30whp down from all the 135s we tested with the same mods/tune. Made sense once I looked under the car.
I think the 135i catback gets a bad rap. Here is a dyno test a few weeks ago through the stock midcats/135i catback. Not even a golf-tee mod. 91 octane + M10.

Attached Images is offline   Canada
Reply With Quote