I already tried a search, but didnt get exactly what I was looking for. Just two quick questions. I have the QTEC valve, and I just want to know if there is a particular brand of cutout that works best with it and installs easily, (welding no problem)? And, I havent gotten under the car yet, but can I install it above the cat or does it have to be after it? Thanks to all who reply.

 

its gonna be after the cats towars the back of your y pipe where it becomes 1 pipe, you will have to get a shop to weld the cutout in. Flowtech cutout is what I used and it fit perfect. Im sure if you call QTP direct they can give you the hookup on the cutout.