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Old 02-10-2010, 11:33 PM   #3
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Join Date: Jul 2008
Location: FLA
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My Ride: E90 6MT
Originally Posted by vsvahia007 View Post
Straight pipe will give you a nice sound from Stock. Horsepower wise your going to lose power due to the loss in back pressure. I would recommend deleting resonators with test pipes to free up the exhaust flow. I would recommend upgrading the rear muffler with either Active or Eisneman to obtain both performance and superior sound.
This is bullshit. All of it.

I have already posted many times on how to make power from an exhaust:
Y pipe as close to the header collectors as possible, to a single 3" exhaust. You do not lose power from "lack of backpressure"

Everything else out there is a muffle, which will give next to no noticeable gains.
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