2013sTang

Im in the market for getting a full exhaust from headers back. I really like the slp setup but don't want high flow cats and I believe that they only come with them as where the kooks can get and offroad x. I was under the impression most gains came from getting rid of the cats. Need opinions on is it really worth it to go offroad versus high flow cats. I

Envy

I would go with HFC so you can keep a little back pressure but that's just me. I'm not sure on the gains though, I'm kinda interested in the responses to find out.

2013sTang

I've been super curious about them to. I want to get something that performs well. I can't seem to find any stock to slp dynos