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Thread: VCM Writing Times

  1. #1
    Senior Tuner LSxpwrdZ's Avatar
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    VCM Writing Times

    I do a lot of Gen4 Gen5 GM applications. Is there a reason flash times are WAY faster in 2.24 than 2.25? I can literally flash the ECM and TCM in 2.24 as fast as ECM only in 2.25.

    Sort of a petty question however time is money lol.
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  2. #2
    HP Tuners Owner Keith@HPTuners's Avatar
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    2.25 uses much safer timing than 2.24, per the manufactures implementation.

    In some cases though, the timing might be a little too safe and will be adjusted town to reduce write times.
    We got this guy Not Sure, ...

  3. #3
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    Quote Originally Posted by LSxpwrdZ View Post
    I do a lot of Gen4 Gen5 GM applications. Is there a reason flash times are WAY faster in 2.24 than 2.25? I can literally flash the ECM and TCM in 2.24 as fast as ECM only in 2.25.

    Sort of a petty question however time is money lol.
    I noticed that too. In my case it was only an additional 30 sec. or so on an E38 manual, but definitely noticeable. I just assumed it was for better error checking. The E40, by contrast, seems a little faster.
    Jaime

  4. #4
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    A bit off topic, but has anyone reported "Read" issues with 97-98 LS PCM's.
    Jaime

  5. #5
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    Bill@HPTuners's Avatar
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    Quote Originally Posted by ElecTech View Post
    A bit off topic, but has anyone reported "Read" issues with 97-98 LS PCM's.
    No
    It doesn't have to be perfect, it just needs to be done in two weeks...

    A wise man once said "google it"

  6. #6
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    Quote Originally Posted by Bill@HPTuners View Post
    No
    Ok, looks like I'll have to try and gather more information for you.

    I had a 98 Corvette fail to read using version .2855 (I think). It would hang half way through the read and then time out. I tried several attempts with the same results. 2.24 Read and Write worked just fine. This was the first 97-98 PCM Ive tried with 2.25 so I wasn't sure what the deal was.

    If I can still get access to the car, I'll try again with a more recent build and get any debug and info files I can.
    Jaime