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Thread: Throttle Limp mode

  1. #1

    Throttle Limp mode

    Hellcat with VMP 105 Throttle body has issue in high rpm with throttle sign after 6k rpm, after Dyno run the TPS Stuck in 15.7%





    6400.hpl

  2. #2
    Every throttle body or bypass drop issue with a tune that works on other stuff has been related to air leakage that does not show up in logs. Throttle body that tends to trend high in dc is a leak in the tops area. So snout between blower inlet and throttle body. The bypass dropping in random spots is related to the other three map sensor areas. Smoke test the car. Ported snouts have had in the past if they have not fixed it an issue with cutting away material where the oring seals.

    On rare occasions it was also thrown around that the throttle body would be sucked closed on really max boost efforts when the throttle body became the restriction and you would see this as the tops reading vac around the 80-85 kpa range or like 20 to 15 kpa of vac on the feed side of the blower. Stock tb stuff though.