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bucking

  1. Technical Questions
    Hi, I have an EVO 4 with the following mods: Evo 4 ecu Evo 5 engine Evo 5 injectors Evo 4 turbo HKS intercooler and hardpipe kit The problem I have is that the car is hesitating and bucking between 1200 and 1800 rpm, it can be felt especially in gear, if you drive along at 1000 rpm and try to...
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