Outlaw Elantra

The RPW header on SR w/ built in high flow cat, who has installed this, if so is it worth it? or just go w/ the 4-1 header from HVE or SR? Also, I read in Yamaneko's post about the 4-2-1 header, someone posted sumthing Random said about some high flow cats not cleaning the air enough to satisfy the O2 sensor. Can I get some more information on this b/c my next mod after I get my car refinished is full exhaust from the header back and am trying to read up on everything i can.

Skitzo

I have a Carsound high-flow cat, and haven't had any problems...been about 4 months since I installed everything and no check engine lights. But I have a Tib, so there might be a difference?

Decker

i had the 4-1 SR headers and carsound cat. Worked perfectly for quite a few months. Then my cat blew out because i was running stinking rich because of my turbo fuel pump.

Random

the header has yet to be installed yet. It should be installed and tested within the next 2 weeks.

Outlaw Elantra

Where can I get a carsound high flow cat from, online?

Skitzo

Ebay is always a good place to start. I got mine for about $45.

KSpec

I have the HVE, it doesn't fit right...there is a part of the block you have to grind down to get to fit.