I "think" I may be having some breakup at high rpm (5750)+ in my race car. Engine is essentially stock with 10 psi of boost. Ill be heading to a dyno this offseason to do some tuning with the SAFC2 I have (not installed yet) to try to get the air fuel ratios under control. My main question is how do I detect this breakup on the dyno and know its ignition and not fuel related? or is there a way? I heard some weird noises and some slight missing prior to rev limiter this last race at mid ohio. I havent changed the plugs yet (iridiums) but I do have good NGK wires and the awesome stock coil packs.