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Thread: LS1 Scratching my head

  1. #1
    Potential Tuner
    Join Date
    Apr 2017
    Posts
    2

    LS1 Scratching my head

    Need help with am LS1 tune, after the 1st scan the car sits for 5-10 min. When I start the 2nd scan the car run lean. Can some one tell me what is wrong? No change is made to the tune from scan to scan
    Last edited by 1323531924; 03-15-2018 at 09:01 PM.

  2. #2
    Tuning Addict 5FDP's Avatar
    Join Date
    May 2012
    Location
    Rogers, MN
    Posts
    13,565
    That doesn't make any sense.

    Just running a scan won't cause it to run lean.

    What exactly are you doing?

    What is the exact setup you are working with? Are you trying to tune it and the changes you are making are causing this problem?
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

    If you don't post your tune and logs when you have questions you aren't helping yourself.

  3. #3
    Advanced Tuner
    Join Date
    Feb 2006
    Location
    PAC NWest
    Posts
    396
    I used to see something like that on occasion. When the scan was looking all wonky I would drive for about 10 minutes, restart the scan, and everything looked ok again.