When im racing or running the car hard it has been missing a couple times at the top of 3rd. around 4500 RPM. It doesnt do it in 1st or 2nd because its usually spinning all the way threw the gear so i end up shifting out of it, and i havent taken it to the top of 4th. I have a ported blower, exhaust, MP inlet and 5% with a new custom FMIC. I have stock fuel system on a 95 with auto lite double platnum plugs at .045. It also idles a little rough. Its steady but rough. Anybody know if its because of stock fuel or should i get better plugs?