Originally Posted by alwayzblazed

well john vega already chiped the ecu and i had a few sensor problems but i fixed them before we dyno it..there are no vaccum leaks and he also put my fuel pressure at like 40 psi running...i im truly stumped....maybe it has to do with air/fuel ratio at quick high rpms...i dunno..like i said it only happens when u floor it..i hope when we take it to john again next sat. he can figure it out.
also i think mtber hit the nail on the head just needs to be tuned..
thax evryone for ur input.