has anyone with a typical 4#,chip,filter,ever changed over to the high-flow mid cat pipes and catback and did a before and after dyno test? I just orderd mine for sound mostly,but I would think it would have to give a few ponies

 

It will gain power as you are removing 4 cats and replacing them with 2 hi flow cats.

 

thanx Menace I knew it would any guess as how much? BTW thanx for the advice on the 410 gears i love them