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      01-30-2013, 01:38 PM   #17
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Drives: 2013 E93 M3, Jerez Black
Join Date: Jun 2007
Location: Bay Area, CA

iTrader: (20)

Originally Posted by pbonsalb View Post
Do you have any dynos that show the secondary cats pose no restriction? I agree on the bang for the buck part, but not on the perform virtually the same part. While a pair of 400 cell cats plus a pair of 200 cell secondary cats are a greater restriction than just a pair of 200 cell cats, a pair of 200 cell secondary cats is still a restriction.

On an NA application, secondary cats vs Akrapovic Evo vs catless, I had a total horsepower variance of less than 9 horsepower. I'm happy to give up 2% power to not stink as badly.