created the thread AFR Delta between bank 1&2
" *Please no tuner war, Shiv hate, etc. in this thread. Just looking to get this issues resolved*
I have recently been having issues with a delta between banks 1 and 2 for AFR and fuel trim. The richer bank has a higher fuel trim, so the DME is intentionally making it richer. Looking at old logs, this started after I replaced both O2 sensors. Talking to Shiv he thought it was either long term adaptations causing it or old injectors having a bad seal (this was eliminated after a compression test [one bank was replaced under warranty 20k miles ago.])
So today I went ahead and cleared lambda adaptations with Inpa. No luck. So I then reset ALL adaptations with Inpa. After the first restart I got a DSC error and 500-1500rpm repeatedly (learning TPS). I restarted it & it idled fine, but AFR was constant(not reading). I restarted again and the AFR's were the same for ~10 seconds then the delta developed again. With the Daten files loaded I couldn't read my injectors so I just updated my Daten. Now there are additional adaptations listed that I will reset those tomorrow and see if it makes a difference.
Hopefully someone will have some insight into what may be causing this... I could try replacing the O2's again or the injectors, but hopefully it can be fixed via INPA. "
06-16-2013, 06:50 PM