i have bought some kinetix high flow cats and i got a fast intentions exhaust with dc headers havent installed anything yet the high flow cats though is only 2 in inlet 2 in outlet and my headers and exhaust is 2.5 in and im going supercharged what should i go with the high flow or test pipes need input any will be appreciated thanks

it really doesnt matter... i have test pipes.

u should just get a cat so u can have more back pressure for that blower =)

does that sound right?

its not going to make that much of a difference.

On a Centrifugal Supercharger? No...

.

but no a routes charger thats the case right? i know i heard that somewhere......

you're right man, with my Borla Headers I am actually capable of gaining more power possibly if going back to stock, not much hp though if anything. But your back pressure information is correct, and to the O.P get HIGH FLOW CATS Kinetix? No problem, I'm running Kinetix

I have fast intention test pipes myself.

get rid of those HFC's. go straight pipes. or at least a HFC thats the same inlet and outlet as your headers/exhaust.

If I had to do it over [ I sold off the custom Vortech ] I would go with the high flow cats . The test pipes are to loud and raspy . I dont think it would make all that much difference anyway .

Im talking about a Stillen dual exhaust and test pipes

It was probably raspy because you didnt get resonated TP's...

and the fact that the Stillen exhaust is prone to rasp with further modifications (HFC, TP's, headers)

The Stillen does have resonators on it [ mid way back ] but it is a loud exhaust . Going to a really free flowing exhaust will always cause rasp with this car . I guess you have to add more resonators [ more than one set ] to get it toned down

thanks for the input you guys