ok when im driven when the car is warmed up going about 30-35 in 4th gear between 1500-2000 rpms i think, when i barely hitten the gas to stay at the speed limit the car will fill like it is missing bad but i got new plugs and wires on the car. BUT i think i need a IAC because when the car warms up they rpms will go up and down between 1k to like below 500rpms which is weird to me.