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Thread: Vehicle Speedo correction issues E38/T43

  1. #21
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    Quote Originally Posted by Tre-Cool View Post
    So i got my vy ute running with the 6l80e and looks like i got the same problem. however i can change the ppl value in the dash from the stock 6200 to 3000 and it bumps it up the speed closer to ecu speed.

    I'm just going to try something in the tune to see if i can get it closer.
    From memory changing HO 0150 to 203 started things on the right path for me
    Its all spot on now
    Let me know how you go and I can send tune

  2. #22
    Lifetime Member Tre-Cool's Avatar
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    Quote Originally Posted by Hooter View Post
    From memory changing HO 0150 to 203 started things on the right path for me
    Its all spot on now
    Let me know how you go and I can send tune
    Yeah i read that, but it screwed with your ecu vss didnt it? i guess at the end of the day as long as the tcm vss reads correct. shouldnt make a diff to what the ecu see's.

  3. #23
    Lifetime Member Tre-Cool's Avatar
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    So i changed H0105 to 182
    H0122 to 8
    Modified the PPK value in my dash cluster to 3000 as that is the lowest it will let me input. If i could change it to 2600 i'd be much easier.

    Now the TCM reports 100kph. ECU - 120~122 ish.
    Dash Cluster matches TCM speed

    That's with a 3.73 diff gear, I'll be changing to a 3.08 after the new year.

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