Thread: cat removed new problem

Turbos get a new dp, typically a tog dp but not always. Your stick catback will be too restrictive for turbo also. Turbo should be 3" exhaust.

For now you'll be fine w a 3" chatted dp, stainless is up to you, get it with an extra o2 bung. With stage2 heads you benefit more from headers though, ssac or speeddaddy headers will cost you about 300 when all said and done and include the dp.

Do you have hpt or is someone else doing it for you?

Originally Posted by Swiggles

Turbos get a new dp, typically a tog dp but not always. Your stick catback will be too restrictive for turbo also. Turbo should be 3" exhaust.

For now you'll be fine w a 3" chatted dp, stainless is up to you, get it with an extra o2 bung. With stage2 heads you benefit more from headers though, ssac or speeddaddy headers will cost you about 300 when all said and done and include the dp.

Do you have hpt or is someone else doing it for you?

I have HPTuners standard no wide band, but there's a shop close that's reliable and my buddy knows the guys. They ls1 swapped a RX7tuned via HPTuners PRO, it was flawless they're very knowledgeable.

Aside that I do know about the factory catback 2.25" turbo restriction. But for right now with my mods, im trying to just get a catted downpipe for my current setup. When I have money I'll start acquiring the hot pipes, cold pipes, turbo, rear plog, wastegate purge, etc. But for now I just need a dp, and I've been told catless is useless, also I have a 05 PCM so I figured I should order a catted dp with a rear o2 bung, so I dont have any cat diagnostics test problems. Guess I'm wondering if im on the right path, and I would like another's opinion on which downpipe I order. I got the ZZP stg2 p&p heads with 105lb springs etc for the turbo setup in the future.

Thanks for the help swiggles,
Ryan