Not sure whats going on, I set up a maf tuning calibration, drive, paste special by half, 3 times using two different methods. The AFR error never changes but the fuel trims do after pasting the maf frequency table. It all says the AFR error should be close to zero. Mine stay mostly the same but the fuel trims go from lean to way rich.
So how do you know when your maf is calibrated? Whose tutorial is correct?
Used this https://www.google.com/url?sa=t&rct=...8zlaK2xxubWnvA
And This One: http://www.silveradoss.com/forums/to...he-maf-sensor/
This is for a rebuilt 5.3, 02 LS1 cam, headers, air intake. Otherwise stock spec Gen IV long block with LM7 intake, injectors, accessories, etc. 2002 silverado programming.
Attached are three scans, flashed for maf tuning, then a fourth with the maf corrections changed in the main file and flashed into the truck. Two sets, two different methods.