Got the following graphs last week:
The guys at RG said it's running rich, but it's kind of normal for the stock cars.
After some reading I tend to agree it's rich, as most DSMs seem to run usually with AFR at around 11, not lower than 10.
What AFR do you guys have?
If it's rich, what are the standard points to be checked? Spark plugs, O2 sensors, MAF, boost leaks?
As I mentioned in my other thread, I had CEL with error P0170 "Fuel trim bank 1". Does it give any clue? It appeared previously, I reset it and haven't seen for a while.
I have an OBDII reader (Bluetooth ELM327). Can it help to diagnose the problem? What software could I use and what parameters should I check?
I continue searching the DSM forums, but any useful information will be appreciated.