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Thread: Hello from Europe! Experienced Holley EFI user trying out HP Tuners

  1. #11
    New Member
    Join Date
    Nov 2025
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    OK, just called the guy and asked him. His reply:

    You can change VIN with PcmHammer, it is included in
    Universalpatcher-Full.zip

    - Change VIN with PcmHammer

    - Read PCM with PcmHammer

    - Disable anti-theft (VTD) with UniversalPatcher (and some DTC codes)

    - Write modified bin with PcmHammer

  2. #12
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    Mar 2006
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    795

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    Quote Originally Posted by 1NJECTED View Post
    OK, just called the guy and asked him. His reply:

    You can change VIN with PcmHammer, it is included in
    Universalpatcher-Full.zip

    - Change VIN with PcmHammer

    - Read PCM with PcmHammer

    - Disable anti-theft (VTD) with UniversalPatcher (and some DTC codes)

    - Write modified bin with PcmHammer

    There are "Free" ways to go about doing what you want.
    One is with the PCM hammer and Universal patcher. But if you are chaning the camshaft and such then using those to tune with take a absolute ton of patience.
    With EFI/HPT your getting a really nice scanner with ways to make graphs with corrections and such.
    If you want to try Universal Patcher or Tuner Studio then you will understand really quick.

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