I'm getting my cat chopped off, how much of a gain can I expect from this?

 

couple horsepower. crappy sound, non legal car...

edit: you have stock manifolds and catback. you will gain nothing

 

I actually liked the way mine sounds now without it. I think the gain is small...maybe about 10rwp, but keep in mind that was with already having, CAI, headers, and hotcam.

Aaron

 

I haven't got it yet, but a hooker catback is going on. Also, my car is licensed in Florida, no emissions.

 

Doubt it's anywhere close to 10 RWHP. My guess is that 3-4 at most and then you will probably lose a little bit of low end torque too.
I gutted mine and using it temporarily just because it was bad, but I definetely will get a new one even though I don't have to pass emissions. Cats are a good thing to have.

 

It may only be 3-4 hp. Im not sure but I was guessing close to 10 for me because since I got rid of it, the car consistantly seems to run almost 1mph faster in the 1/4 compared to before.

Aaron

 

my offroad pipe cost me horsepower. I had almost 5 degrees of false knock with it, that went right way when i put my cat, back on also along with the horrible sound.