Cat-back sizing question

[Ghettokracker71]

Alright,you'll have to forgive this question,I still have ALOT to learn...

From what I understand, Cat-back exhuast systems are designed to bolt-up to the stock cat converter, is this correct?

If this is correct,then what could I do to get one to bolt-up to a high flow cat that is larger than stock cat size,or a test pipe that is larger than stock cat-size, b/c if I run a reducer pipe then that takes up too much room and it won't all fit under the car ? Can somebody PLEASE show some light on this topic! Thanks!

:aw: :aw: :aw:

[Replicant_S14]

Larger how? Do you mean the inlet/outlet diameter?

If so it shouldn't matter. If your stock catback is attached to the hi-flo then an aftermarket one will too.

You can get different diameter tubing on aftermarket catbacks. I had a choice of 60mm or 70mm on mine. Just get one that matches the diameter of the hi-flo.

If you already have a system that's a different size, just put it on and don't worry about it. That little bit of restriction isn't going to kill you on a NA motor. I think you're just thinkin' too much.:)

[Ghettokracker71]

hah hah,thanks man :D