This will probably be hard to follow. Every now and then at full throttle accel, the car will feel like it dropped a cylinder when going from redline in second to third, then it will remain for a split second in third and clean up almost imeadiately and pull normal again. When it was tuned my injectors were at 99% duty cycle. I have checked plugs, wires, coils, ect. The car does not throw any codes. On the way home from the dragstrip I got on it and started to spin in 1st and while spinning in 2nd the ses light started flashing so I let off and it went out almost imeadiately. Thinking missfire I checked the codes, the only codes were for the IPC and it had lost communication with everything. No miss fire codes, no PCM codes at all. The car runs great so probably not a valvespring, and if it was it would definately show a code. Anyone got any Ideas? mods are FLP exhaust Xpipe High flow cats Borla Stingers, TR224 cam, Intake and head work.