haven't done it myself... only thing to think about is that there is an exhaust backpressure valve located just before the silencer, so that would have to be removed at all in order to unrestict exhaust flow... and that be the case just wait for a company to come out with a full system and buy that.... otherwise you're just gonna waste all that work for using the same silencer and pipe. i'm just waiting for akrapovic's new system. check their site and check under the coming soon section... it's sweeeet!
a friend that i work with bought a leo vince exhaust for his 07 and it got rid of his cat, he said that the power difference was unreal, I wouldnt just take it out, the oxy sensor is right at the end of it, find an exhaust that takes it out with the pipe
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