I have a 2007 GP GT supercharged. The car has SSAC headers, 1.9 rockers, 3.5" pulley, custom intake, no cat, and no egr. I also am running 90# valve springs and an Overkill tune. Intermittently I'll get a hot idle misfire, will never happen cold and it goes away as soon as you touch the throttle. I'm running AL104's and new wires. This is the second set of plugs in 15000km. They're gapped at 0.045" . It did this last time Overkill was tuning it as I was leaving and he said there's no evidence of vacuum leaks. I'm starting to think of other possibilities before I go change another set of plugs and wires, maybe injector? It threw a P0300 the other night for the first time but before reading the freeze frame data I cleared it. Not sure where else to go with it?