Just as the title says, is it OK to use O2 extender bung with OEM Cats? I had test pipes isntalled but now i'm ready to go back to stock cats but the o2 sensors threads got messed up when removing from stock cats originally so it will be next to impossible to get them out of the o2 extender. any input will be appreciated

 

Erm, i'm going to guess that they will read to little 'gas' and you might end up with either a SES light or some possible long term cruising/idle mixture issues.

 

thanks for the info. didn't think of that