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Thread: Help with tuning my cammed 6.0L LQ4 jet boat swap please!

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  1. #1
    Senior Member Wasted Income's Avatar
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    http://www.youtube.com/watch?v=5qI0BsAc9WI



    Routed the LH exhaust up, thru the transom for tuning purposes, put the wideband down inside like on the dyno. Runs pretty good at idle, but wasn't able to log much wideband data at speed, because the first time I stabbed the loud pedal, the sensor came rocketing out...and into the water. D'oh. Gonna put a bung in and try again, lol.
    2005 Silverado Duramax LLY - EFI Live Tuned
    1969 Chevrolet C-10 Pickup - Turbocharged 5.3L/4L80E - EFI Live Tuned
    1975 Avenger Jet Boat - 6.0L/Berkley pump - EFI Live tune in progress

  2. #2
    Senior Member Wasted Income's Avatar
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    Well, I haven't had a chance to AutoVE yet, but I swagged a tune close enough to be able to take it out and play this weekend




    Runs good other than:
    1) When I chop the throttle from speed, the engine dies.
    2) Also, I am still getting a pretty serious surge at idle, after giving it a little throttle input around the docks. Will surge hard enough that it will die most of the time.

    Can anyone look at my latest tune and give any suggestions as to what to look at next? I just did the RAFIG process yesterday. I don't have a log from these events...was out to drink and play, not tune, so....

    Thanks in advance guys!
    Attached Files Attached Files
    2005 Silverado Duramax LLY - EFI Live Tuned
    1969 Chevrolet C-10 Pickup - Turbocharged 5.3L/4L80E - EFI Live Tuned
    1975 Avenger Jet Boat - 6.0L/Berkley pump - EFI Live tune in progress

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