I'm trying to tune a 2012 silverado with a 5.3 and ls9 cam swap. The thing is an absolute dog and the fuel trims add up to 60%. I've tried to disable dynamic fueling so it just runs off of the maf. No matter how much I add to the maf curve, it doesn't richen up. He deleted the afm and vvt and I've deleted the afm solenoid dtcs and the vvt codes, set vvt cam to none and oil pressure in the vvt to none. I'm really not sure the problem is tune related. Do these ls9 cams require 60% more fuel at idle? Any help is appreciated. I can post the tune when I get home, but I really haven't done much since I can't get it to move out of its own way.