closed loop AFR and cat converter

EITCP · Post by **EITCP** » Sun Jan 25, 2009 5:53 pm

Does anybody has any experience if AFR in closed loop (if you have WBo2 for closed loop input) around 15.5:1 can damage cat converter?

xenocron · Post by **xenocron** » Sun Jan 25, 2009 8:18 pm

Stock or high flow? I dont think 15.5 is going to hurt a cat converter...a lot of cars out there run way leaner these days.

EITCP · Post by **EITCP** » Mon Jan 26, 2009 4:31 am

genuine honda one...

borat · Post by **borat** » Mon Jan 26, 2009 5:10 pm

Running rich is what will kill your cat. Speaking from experience here, I melted mine when trying to tune on uberdata back in the day.

Post by **Bugermass** » Mon Jan 26, 2009 10:59 pm

Depending on how close your cat is to the motor, its possible but not likely that running too lean can cause EGTs high enough to overheat your cat.