OK so sometime next week my Greddy Evo should be arriving. :yay: Over Easter weekend i'm going down to jersey to install it with a friend. He suggested the idea of putting on a high flow/performance cat at the same time cause he could possibly get a deal on one.

My question is, would the addition of a performance cat cause the loss of too much back pressure....therefor making the car slower? Or would it help since I am getting a new exhaust system? I have a 95 EX Sedan 4 banger

Also...would torque be affected in any way?