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2d06 29e1 idle occasionally stutters
The engine is N51 which is very similar to N52. The codes I am getting are 2d06 low mass air flow and 29e1 bank 2 lean and sometimes 29e0 bank 1 lean. The idle is usually about 650, occasionally it will stutter, drop a bit and recover which is usually when the codes are set. I have also seen the low load adaptations drop when this occurs. I smoke tested it and found and repaired some minor air leaks. I also used propane, didn't find any additional leaks. Idle adaptations are 1.21 both banks. Currently low load adaptations are 13% bank 1, and 18% bank 2. They do vary at times for example, 3% bank 1 and 8% bank 2, but almost always positive and bank 2 about 5% higher than bank 1. They seem to be lower when car is cold, but not all the time. I have added log showing other data from the car.
I did change bank 1 pre cat oxygen sensor, it changed values slightly, same with MAF. This problem is driving me crazy, any suggestions are greatly appreciated.
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