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      04-05-2010, 04:55 PM   #38
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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.
So you're saying the 135i makes far less power due to a more restrictive exhaust compared to the 335i?
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