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Thread: 06/07 LLY Van

  1. #1
    Potential Tuner
    Join Date
    Mar 2017
    Posts
    3

    06/07 LLY Van

    Hey guys, I just picked up my second LLY (lbz) van yesterday for a steal of a deal. Previous (and only owner) claims ?it needs a fuel system?. Well I highly doubt that and I?ll be sure to have it running shortly.

    Anyways my first van had went to a local diesel shop and they fiddled with it and it drives a little nicer, fuel mileage is great, has some more power it seems. Long story short I?m taking care of the second/new van. Does anybody have a file I can go off of to use in the compare feature and sort of guide me towards where I want to be? I?m looking for a decent bump in power and fuel mileage/driveability as the main priority. I realize time will need to be spent smoothing and tinkering but if someone could provide a compare file that would help much.

    Will post stock file later today when I get to workin on the heap. Not sure how much info I?m forgetting or overdoing on but you get the just of what?s going on here, I hope.

  2. #2
    Potential Tuner
    Join Date
    Sep 2023
    Posts
    5
    ever get around to the stock read?

  3. #3
    Tuner in Training
    Join Date
    Jan 2023
    Posts
    41
    You can play with your TPS settings and add 5-10% from 40 mm3 up. That will help with throttle as long as it's currently stock. The power comes from the rail psi, pulsewidth and timing. There is a timing calculator for lly/lbz. If you can't find it let me know and I'll send you the link. Look up the MCRAT 20/20 tune. When you are adjusting pulsewidth , don't add pulsewidth to anything below 80mm3. Post your current file and I'll look it over and try to give you some pointers to help you out and get you headed in the correct direction. Pulsewidth , timing and rail psi all tie in together. You can get them all in sync and have a pretty stout/clean truck.

  4. #4
    Advanced Tuner
    Join Date
    Jan 2006
    Location
    DFW
    Posts
    261
    You could also read your first van and compare the file from it to your new one and see what all was done it.
    2008 Denali XL AWD LSA Blower
    2010 CTS-V
    2005 LLY Duramax SAS
    2015 Denali