I'm replacing my whole exhaust system on my 93 Integra LS.

I've ordered a DC Sports 4-2-1 header and a Greddy SP2 catback system. Now the old cat is just rust, I need to replace it. I need suggestions on what to replace it with. I was looking at carsound cats, I've heard they are good.

My main problem is size. The Carsound cats I've found are only in 2.25" and 2.5". But the pipe for the Greddy is 2.36" and I have no idea what the header is. Help!

 

The DC header is a 2.25" outlet. Get the 2.25" inlet cat, i found a great deal on Carsound cats on ebay. I got mine for like $55 shipped.

 

Even though the SP2 inlet is bigger that's ok?

 

I would think it's ok. The shop thats doing the install should be able it make everything fit. Better bigger then smaller.

 

Excellent choice of exhaust... me want...