High flow Cat and OBDII emissions

Ryanm07 · Post by **Ryanm07** » Mon Mar 05, 2007 7:06 pm

Ok, i'm looking for a cat for my turbo neon. I figure i should just go for a high flow one. Does anyone know if the magnaflow and catco cats are good enough to pass OBDII emissions in NJ? If not which ones are? thanks!

gilly02le · Post by **gilly02le** » Tue Mar 06, 2007 1:16 pm

I've passed two e-tests now, both with a magnaflow high-flow cat and 2.5 inch exhaust... passed fine, was well under the limits.

Post by **racer12306** » Tue Mar 06, 2007 1:34 pm

I think most of the time all an OBD-II emissions test is, is plugging a computer into the OBD-II port. If you have no check engine codes and you pass the visual inspection, then you are good. Some states are rediculously picky, california, and probably require a sniffer.

Ryanm07 · Post by **Ryanm07** » Tue Mar 06, 2007 5:22 pm

yeah last time they just plugged it into the port. but they also didnt even open my hood. this was before the turbo though. but noone is getting any lights with their high flow cats? like a magnaflow or catco?

Post by **Diablo0** » Tue Mar 06, 2007 11:20 pm

Usually as long as you don't get a code or haven't had any codes in the last 50 key cycles or so then you're good. I think I only know of a handful of people that have had problems with hi-flow cats but I think they weren't Magnaflow and were another brand that was a little too free flowing for the cat to do it's job...