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Thread: 2002 viper gts

  1. #1
    Tuner in Training
    Join Date
    Jul 2014
    Posts
    15

    2002 viper gts

    I have question under the oxygen sensors the oxygen heater says disabled are the heaters really turned off from the factory? I'm having trouble tuning the fuel trims are pulling fuel at idle but car is lean if I drive it and get on it hard it seems like the o2s work better hot. the car has headers and the o2 is in one pipe on each side not in collector not a fan of that any thoughts

  2. #2
    Advanced Tuner
    Join Date
    Jan 2022
    Posts
    882
    check the log

    if the heaters were really off it would have to be in open loop for quite a while on a cold start

  3. #3
    Tuner in Training
    Join Date
    Jul 2014
    Posts
    15
    factory setting 495 sec delay open loop is there any reason not to enable heaters? never tuned a dodge the logging is slow I made a histogram of map vs wide band and one for trims fuel trims its so slow