catalytic converter help

[lordsaber]

I own a base 04 vibe 5 speed wirth a Ingen CAI and a Flowmaster exhust system from the Cat. back. Currently i have the OEM cat. on my car, it works just fine but, am i robbing myself of HP by not gettin a "performance" or "high-flow" converter? Please advise. I am open to all suggestions on what to do and what brands to go with if need be. thanks again

[CAN-AWD-VIBE]

OEM cats are restrictive, they all are. It used to be that a high flow cat was stupid expensive and not worth it but now that I know magnaflow makes a in-expensive high flow cat, I need one too.just eBay search it here... http://search.ebay.com/magnafl...ZWLRSJust use a universal that is the same as your piping. They sell all different sizes. You could also get a pipe made from the "header" to the cat and bump op that pipe size too, then match the cat to the pipes infront and after. I figured that out since my post to BlueCrush asking about his, it was a dumb question. I think it may have been a drunken post anyway. Maybe thats why he didnt write back? Anyway... I still dont know what to do with the oxygen sensor that sits right after the cat in that pipe though. Maybe your cat-back takes care of that already. Mine will be a custom setup so I still need to figure that out, then get a Magnaflow cat of my own!CAN-AWD-VIBE

[tcam]

I don't think u can just buy a universal cat and expect to be able to have it bolt right in to the car. With our pre-cat and stuff it gets a little confusing and I don't think u can really do much of anything without getting a cat custom-fit for the piping.

[CAN-AWD-VIBE]

Quote, originally posted by tcam »I don't think u can just buy a universal cat and expect to be able to have it bolt right in to the car. With our pre-cat and stuff it gets a little confusing and I don't think u can really do much of anything without getting a cat custom-fit for the piping.I have to get custom anyway, I'm AWD.You buy a custom cat and when they are doing your custom exhaust you get them to weld it in.im going to gut that pre-cat and get new pipe from there all the way back.and i found that the muffler shop just welds in a "bung" for the 02 sensor.