Breaking up from 3500-4000 rpm
I have a 92 GT with a 351W, Msd pro billet dist. 42lb injectors, 70mm tb matching mass air and trick flow upper and lower intake and trick flow heads. My problem/ question is under normal acceleration its ok but if I get in the throttle hard it breaks up from 3500 to 4000 rpm then clears out and then flat out runs great. any suggestions?