do you own, have access to a vacuum gauge?

please put the scanner down,

and do some relative testing.

pull an up stream o2 sensor on problem bank, and see if misfires gone, clean the maf sensor. pull 2 spark plugs, 1 on each bank, then tell us trying to help you, what compression, and running compression values are. I am not familiar with product you are working on, so I do not know if plenum has to come off to do compression testing,

Marty Copper
Owner/Technician
Aspy's Best-One Tire & Auto Care
Hoagland, Indiana, USA