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flowmaster 3.5"

  1. Stat Mods for ZJ/5.2

    Drivetrain Tech Center
    I'm putting an 180* stat in my '93 ZJ/5.2 and read that you can/should drill a small 1/8" hole to act as a "Jiggler Valve" to prevent air lock? Is this wise? Has anyone done this mod with success? Can it be detrimental?