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Thread: 4L60e from 4L65e

  1. 01-27-2017 #1
    jandylee070601
    jandylee070601 is offline
    Tuner in Training
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    Jul 2016
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    4L60e from 4L65e

    I have an 05 GTO. My trans went out. Lost 2-4. Trans guy decided to build a 4L60e and put it in since he had a core on hand.
    I have a 3200 stall (assuming he did put it back in)
    Vararam
    Headers
    No cats or resonator
    Cam
    150 Shot wet kit
    Fast 92 OTW
    Underdrive OTW
    60lb Injectors OTW
    I'm not sure about the trans tune and the RPMs are bouncing 1k to 1500 only in 3rd.
    Any assistance here? Jandy GTO Riley Trans.hptlog home.hplJandy GTO Riley Trans.hptlog home.hpl
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  2. 01-27-2017 #2
    Philbar715
    Philbar715 is offline
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    Join Date
    Sep 2016
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    This may or may not be related. But I see when it does the "pulsing"/bouncing RPM in 3rd gear that your AFR goes super lean. Your MAP readings also "pulse" in a similar fashion. In general your AFR is off by a bit while cruising around. Your trans line pressure bounces around a bit as well when this happens, and your TCC line pressure is around 120 too.

    I briefly looked over the first tune file you attached, and I didnt see anything that stuck out at me other than the TCC PWM min could be set at 90% as opposed to 70%

    How are the temps of the trans?
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