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Thread: DBW pedal and TB vs TAC (LS2 into LS1 Holden Adventra)

  1. #1
    Potential Tuner
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    Jan 2024
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    DBW pedal and TB vs TAC (LS2 into LS1 Holden Adventra)

    Hi,

    I've got a 2005 VZ LS1 Holden Adventra that is DBW. I have put an LS2 in. I got it running using an Xlink on the throttle body.

    I now have a throttle pedal failure (common for the blue sticker version)

    I have purchased a DBW throttle pedal that suits a VZ LS2 (white sticker).

    Although I have the Xlink and an Ultimate Conversion Wiring converter for the different pedal, I was wondering what the TAC actually uses for comparing the pedal and the throttlebody? Given i now have a matching pedal for the throttlebody, can i just change some pinouts/plugs to suit and the TAC will just compare pedal to TB? Or does it have preprogrammed figures that it needs to see? Or am I completely off track/missed things with my thinking? The more I can avoid electronic converter boxes, the better lol less to go wrong.

    Thanks.
    Last edited by bmarin82; 01-18-2024 at 04:40 AM.

  2. #2
    Potential Tuner
    Join Date
    Sep 2020
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    6
    So it seems I found my old account. What I forgot to say was can the TAC be edited? IF it has values in it that are referenced?

  3. #3
    Senior Tuner TheMechanic's Avatar
    Join Date
    Jan 2014
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    SoCal
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    Can you? Yes. Should you? NO. At best you will likely get a REP. At worst you could have glitchy run away throttle. Lots of those pedal commanders that modify the signal from the APP to the ECM/PCM. The only time I have ever modified TAC settings is some 2000's trucks and vans that had a throttle progression issue and GM put out software to fix it. I use SPS/TechLine Connect to fix that. Otherwise I have a hands off approach to any of the APP to throttle values. Others may have better results than I do.