Thanks JJ, I will go thru the thread in detail when I have a day off-in 7 days. I should have begun my post by saying tnat I have already swapped plugs,wires,checked air filter,MAF door,tightened intake clamp,checked for leaks in vac tubes etc.THEN I took the cowardly step of taking it to the shop!Most of my handy friends are a lot more at home with a stock F150 than A modded b6p! Thanks again Rocky