digitaloutsider
New member
Is it kosher to put a wideband after the cat in the rear O2 bung? I see a lot of mixed opinions.
Last edited:
Eliminating KR - I think I see the problem?
- Thread starter digitaloutsider
- Start date
Scottydoggs
Killa Bee
i find it ok to install it there, where mine is.
i just went over his tune, he was missing a tune pretty much. sent a new tune, pretty sure i might be his new hero lol
i just went over his tune, he was missing a tune pretty much. sent a new tune, pretty sure i might be his new hero lol
Fivefingerdeathpunch
New member
The location after the cat is okay, just not putting it after the cat itself isn't.
The cat converter at part throttle can skew wideband readings and make it slower to respond than if it was infront of the cat. At WOT after a second or so of delay "should" still show very close AFR readings to a wideband in front of the cat because the cat converter isn't doing **** to the gases when there is so much flowing through it at once. They are not designed to work good at full throttle, that's why they need to flow lots of air and not be a restriction. Idle and part throttle is where the cat is doing all it's work.
That is why when tuning with a wideband it should be infront of the cat to prevent skewing/problems.
The cat converter at part throttle can skew wideband readings and make it slower to respond than if it was infront of the cat. At WOT after a second or so of delay "should" still show very close AFR readings to a wideband in front of the cat because the cat converter isn't doing **** to the gases when there is so much flowing through it at once. They are not designed to work good at full throttle, that's why they need to flow lots of air and not be a restriction. Idle and part throttle is where the cat is doing all it's work.
That is why when tuning with a wideband it should be infront of the cat to prevent skewing/problems.
digitaloutsider
New member
Yeah, pretty much. You saved me a lot of pulling my hair out.
As for the wideband, I'll get one and I look forward to tweaking it more!