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douchebag n00b

  1. Rev. Help PLEASE!!

    Engine/Transmission
    I race my 2001 Infiniti G20 and i need all the RPM's i got, the last race the car started missing around 6500, runs fine until then and it won't go pass that, just starts missing bad, i have replaced O2 spensors and still didn't help... anybody have any ideas??
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