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boost hesitation

  1. Bucking problems with boost

    NG900 & OG9-3 Workshop
    Hey guys, A litte stumped as to why my car is bucking when it creates a lot of boost pressure. Anywhere from around 15psi and up. I have a brand new ignition cassette. I just put in brand new NGK laser platinum spark plugs. They have only been lasting me around 8,000k a set with a stage 3+ ecu...