millertime_627

hi guys new to this site...i just bought another mustang its an 89 lx with a 347 stroker c4 with a manual valve body...i was told it had stock injectors and maf and i cant tell if the injectors are sock or not...it was runnin a little rich so i changed to 30lb injectors and a tuned 75mm maf for 30lb injectors and now im runnin on the rev limiter and it is missin horribly over 4200 rpm...any help would be much appreciated...thanks

mjr46

I believe stock rev limiter is set at 6250 and has to be tuned out??? as for misfire check for vaccum leaks and tune up parts

NYMustang50

was it running fine with the old injectors and old mass air setup. If it was running better than I would say someone was in the eeciv playing around to make up the difference for needed injectors.