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  1. SVT & DOHC
    I have a 98 cobra just rebuilt the engine. But i need help i had a custom tune made already but when i drive, it some times idles but sometimes wont. I already replaced the IAC, and checked for vacuum leaks. It also hesitates when i roll onto the gas, rpms drops and the car dies. ANY ideas, I...
  2. SVT & DOHC
    1998 4v t45 new crank sensor new cam sensor new plugs (tried iridiums and tr55 NGK) gapped stock msd coils msd wires no imrc's :livid: no codes on self test runs fine around town and under 3500 rpm but go to full throttle and it will begin stumbling and popping around 4000 rpm and will not go...
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