just got my 49 fleetline running and its having some issues. its a stock 2001 5.3 4l60e with ls1 intake and injectors. it runs ok kinda stumbles randomly and the idle kicks up when in drive. it runs and drives ok but the 1-2 shift is slightly late and harsh then it shifts into third and 4th way early and wont downshift when given throttle. from a dead stop it will burn the tires off into second then shifts right into third and fourth and bogs down. heres the tune and log files. any help is much appreciated i know the iat is super high and im questioning the maf placement but im mostly concerned with the shifting at his point.