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Thread: Dis'd my 3.4, how to set dwell in $88?

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  1. #1
    Fuel Injected!
    Join Date
    Jun 2015
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    Ok. I've done A BUNCH of reading and found that A1 uses a latency value of 153 Usec. So I've got to change that.
    I've also read that the dis icm handles dwell, so the ecm is not involved, so does that mean I need to zero out any dwell adders in $88?

  2. #2
    Administrator
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    May 2011
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    Lakes Region, NH
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    LEave the dwell numbers alone. Checking code/cal between early DIS and dizzy shows GM didn't alter dwell calcs.

  3. #3
    Fuel Injected!
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    Jun 2015
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    Ok. Thanks!

  4. #4
    Super Moderator Six_Shooter's Avatar
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    Feb 2011
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    Just an FYI where latency is concerned. I used a dizzy code on one of my cars, then converted to DIS. At first I left that setting alone. I changed it after a while when I remembered about it. After changing it I seemed to have what seemed like timing issues and the car got difficult to drive. Tried adjusting the SA table to compensate. But never recovered. So I went back to the original latency setting and left it that way. I'm still not sure why it would have caused the issue it did, but you may find that using the original setting works best.
    The man who says something is impossible, is usually interrupted by the man doing it.

  5. #5
    Fuel Injected!
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    Jun 2015
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    Ok. I'll watch it closely and check it against a timing gun. You guys are AWESOME!

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