Ok another issue, to start off, car has 255 fuel pump, 1000cc injectors, jun cams, ams built ect ect.. I noticed it started mis firing about 2 weeks ago if you was to get wot, but it got worse, now it seems one whole cylinderr if not 2 isnt firing, idles perfect, normal driving is great as well, always shell or bp 93 oct or 110, its not bad gas...I changed the plug wires and spark plugs, same **** still happens...

 

Speed density or MAF? What is the spark plug gap set at? When was the car last tuned?

 

.023- car is tuned at 22psi pump gas... im thinking it's one of the factory coil packs.. its was tuned and maped by Chris at AMS...I bought the car from a guy that had her to 50k miles...20k on build..it ran great for about 6 weeks then this happened.. MAF Hmm maybe ill look at the sensor real fast

 

Or maybe dirty injectors who loses spray pattern and capacity to fuel engine at high rpms?

 

Check for boost leaks.