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    P38 Gems rough idle slight misfire

    Hi All, hoping somebody can shed some light on this it's driving me nuts! I have a '96 4.6 p38 with BRC LPG and a Tornado chip. The liners went at 92,000 and so I rebuilt the engine with a Turner Engineering short engine with a H180 Cam, it started first turn of the key and ran like a sewing...