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Thread: 2011 CTS-V Pulley Tune

  1. #21
    Advanced Tuner
    Join Date
    Aug 2004
    Location
    Franklin,OH
    Posts
    215
    Few things. Very likely lean. The long terms are showing positive in WOT because of the lean condition before entry to WOT. The MAF needs dialed in,AFR TARGETS are ok but probably actually lean. The timing may be a little high at this point. I would back off the timing while dialing in fuel. Also zero out any timing adder modifiers such as AFR and IAT Spark correction. According to the log you need to log a lot more key PIDs also. IAT2 is paramount as well as the timing advance pids such as AFR,TM,IAT etc.

  2. #22
    Potential Tuner
    Join Date
    May 2017
    Posts
    1
    Do you still have the tune file for just the 2.55 pulley?

  3. #23
    Tuner in Training
    Join Date
    Jul 2017
    Posts
    10
    I'd like to see it too.