ok i have a 96 civic lx with a B16a swap and full ITR inturals and a GRS ECU redone by JUN racing.....

but the thing is a hit a cracoon on sat night and i happen to creak the welds on the exhaust header i had them re-welded and now when i start the car it sounds like its is miss firing.. but all cyclinders are firing but once i try to drive it.. it only gets to 4000 rmp's and then acts like its hitting the rev limiter i donno what to do and now the check engien light is on!!!!