wide band location

[aaronr]

Can I mount the wide band 02 sensor after the cat in the rear 02 sensor location and will be accurate or do it need mounted befor the cat? Thanks

[PitchBlackC3]

pre-cat

[oleshifty]

I have mine post-cat in factory 02 spot. I was told by Allen, that's he's tried all locations, pre/post/at tailpipe, and as long as it's not RIGHT at the exit, all the readings were the same (for all arguments sake)

Obviously, if you can easily put it pre-cat, go for it, otherwise, wouldn't sweat too much.

[pl4yboy]

I've found multiple threads that say post cat is normally .3-.5 richer than pre-cat. I know mine read richer when I had it post cat, but I don't remember how much. It wasn't an insane amount.

[oleshifty]

it'll go pre cat when I finally get my headers on.... but don't tell me that


I'm reading 13.6 cruising and 12.6 WOT now....post cat. Maybe I'll just leave my fuel solenoid off and run a dry shot lol.

[pl4yboy]

That wont do any good. The maf wont read it and it'll lean out like a mother.


I run 12.7 WOT and its dead on. I need to check my WOT on the bottle now though.

[aaronr]

I hope allen would chime in on this.

[farmtruc]

i'm no expert at widebands or locations, all I can tell you is, my avalanche has about 5 o2 bungs, all the way up and down the exhaust, the wb reading reads pretty much the same in all locations.

[aaronr]

Allen have any of the reading taken after the cat?