a weird miss/stumble plz help
ok ive got a strange miss going on in my truck... if im already rolling down the road at any speed from 1mph to 130mph and i floor it the truck has a miss/stumble that is throughout the entire rpm range. but if im stopped dead still and floor it from idle the miss/stumble goes away completely and the truck pulls twice as hard and with the exhaust i have it really is noticable when the miss occurs. anybody wanna take a stab at this. ficm is fine, injectors are fine, and it has new fuel filters and new oil/oil filter in it. so those are eliminated. im at wits end and im tired of cleaning stuff and tearing into this thing every time i get free time to find this phantom miss. im truly baffled. i even blamed my tuner but it does it when its stock tuning is used. i had sct check it out and they say nothing is wrong with there tuning. so does anyone have a clue as to what this is??