I finnally got my car to run good. The only problem now is that at normal cruising the car will run alright, but as soon as I lean into the gas it starts popping and then it will be fine while the gas is to the floor. I've heard of this problem before but I still can't figure it out. Is it the TPS? It feels as though the car is either starving for gas under a partial load, or the spark ain't there. Mainly happens in the lower RPM. My car used to do this only when my car was cold, now it does it all the time since I did the heads and cam. I'm also running a 160 instead of the 180 that was in there, Maybe I need the 180? Iv'e been in other Mustangs with similar mods but there motors are not faster but run very smooth through the powerband. I need some help here, If I get this down pat I will be willing to get the blower for my car.