hotboi850

Just wondering if an O2 simulator is needed if I plan to run a high flow cat?

I'm thinking that I do because when I went to the muffler shop today to ask about my cat. they said my car needed an OBD2 compatible cat. Is this true?

Or could just get the high flow cat. and weld on a bung for the O2 sensor and not get any CEL codes?

Help me out please turbo going in soon

TurboSedan

No, with OBD2 you will still use your secondary O2 sensor so a simulator is not necessary.

hotboi850

Hmm, i did a search and others have said they needed one.

Hey turbosedan how is urs setup?

btw..im turboing my sedan too.hhehe

TOFU.man

yes an o2 simulator is needed to keep from throwing the CEL. BUT there is a jerry rigged way to do it and that is to wrap aluminum foil around the o2 sensor tip where it reads from. BUt that is not reliable i would go with the O2 simulator for $50 it is worth it.

hotboi850

Conflicting replys..ok i guess i'll just have to try both ways an see what works

Teg4e

i have a carsound highflow cat on my obd2, boosted integra. no cel's.