88GTKid

hey guys i was wondering.. as of now i have no cats on my car.. but its getting to be more and more of a pain in the *** every year to get someone to get me a ticket and its costing me like 50 extra bucks.. so i was wondering just how much of a difference does having cats make performance wise.. what about high flow cats?? any input would be great thanks again guys!

P Zero

Cats obviously restrict exhaust flow, so depending on the rest of your combination it could be a noticable difference to barely any at all, if your car is bone stock. High flow cats wouldnt be a bad idea, but I think it would be better in the long run to buy an already made cat H-pipe.
-P.

2 kwik

in a low hp appl. it's not much

P Zero

In a low HP situtation, its actually beneficial to have em on because the cats, even though they are restrictive, create backpressure and increase torque.
-P.