Still having the same problem. I checked for air leaks and found none. I then replaced the O2s with GM sensors thinking the Bosch may be the problem. Still the same thing. I have no idea what to do next. I took a log today and at the beginning you can see how one bank is pulling massive fuel and the other is fine. It was doing this but then like always it will level off and run fine. Always happens after a hot start but then is fine after that.
Is there anything odd in your tune? What do have your B4105 set to?
I guess post up your tune. I am a little perplexed. It is hard to tell if it is tune-related, or something mechanical...
everything was fine for quite some time and I just started to notice this at the beginning of the summer.
I drove it a week ago about 100 miles and it ran perfect other than the problem I'm having right after a hot start. Like I said you can drive it as long as ya want and it will never have a problem but as soon as I turn it off like at a gas station and fire it back up to head out again the crazy spell will happen again for about 30 seconds. If I never turn it off I would never know there was a problem. It's crazy!!
I am still looking it over.
I take it you do not have stock injectors?
The only thing odd tune-wise (other than injectors not stock) is your B4303.
I might change those figures back to stock. I am not sure what the effect of having airflow in P/N on a M6 is..but I would also change the' In Gear' Airflow back to stock.
Personally I have never altered those values..but anything in 'Start-Up' that may have been changed, I would consider a possible culprit. It is just a theory..but perhaps worth a try.
What happens is you swap the front O2 sensors left-to-right...?
I wonder if that's caused by a leaking injector...?
still haven't got this darn thing figured out. I swapped the O2s around and the same thing. I talked to a tuner today and he also wondered why the map was so high. He also said it possibly could be the injectors but I put my stockers back in and it's still the same. I even flashed a known good tune I had for it thinking it was something in the tune but no go..I logged misfires today and they seem to be coming from bank2. Number 6 goes to a flat out miss for a bit then comes out of it. I'll upload a couple logs so you can see where it starts missing at and where it cleans up.
here is a log of the misfire. Don't mind the small misfires at idle because I had to change the tune to allow it to detect the misfires. The rough idle of the cam is the cause of that. Starting at about frame 375 you will see the trims on bank 2 go nuts and also see number 6 start missing really bad but after a bit all the miss will go away
I'm looking at it but I can't quite put my finger on what is wrong... is there another pair of O2 sensors you can try...?
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