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Posted: **Sat Jun 26, 2021 9:11 am**

Alright lads, run into an issue, looking for some help.
I have gutted the pre cats and it seams that it runs on bank one and the second is lean, tuned it with jhm but no change, any ideas ?

Posted: **Sat Jun 26, 2021 1:19 pm**

I had this but it went away after I changed the lower O2 sensors.

Posted: **Sat Jun 26, 2021 2:44 pm**

Lower as post cat ?

RS246.com Forum :: The World's #1 Audi R, S and RS Enthusiast Community

One bank lean the other rich

One bank lean the other rich

Re: One bank lean the other rich

Re: One bank lean the other rich