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Thread: 392 Challenger SRV issue

  1. #1

    392 Challenger SRV issue

    2015 Challenger 392 A8. 218/226 114 cam. I'm having an issue with the SRV valve shutting at 5700 rpm then re-opening at 6100 during a dyno pull. Just wondering if anyone else has seen this? I have played with the rpm enabled and disabled tabs and can only get it to just not open. Pic is with it enabled with it shuttling on the red pull. Blue pull is with it disabled.

    IMG_20200310_004751.jpg

    SRV_disabled.hpl SRV_enabled.hpl Heinz_cam_stkinj_cal.hpt

  2. #2
    Advanced Tuner
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    I wonder if those P2008 and P2016 codes have anything to do with it?
    If in doubt, multiply everything by 1.1.

  3. #3
    Those are old codes from a couple runs I did with the srv unplugged.

  4. #4
    Advanced Tuner
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    Make another run and log short runner valve pwm.
    If in doubt, multiply everything by 1.1.

  5. #5
    I'm not seeing and pids related to the srv in the scanner. I was able to log it with a snap on scanner. It's definatly on, then off, then on again. Maybe some missing tables?

    IMG_20200310_145259.jpg

    IMG_20200310_145317.jpg

    IMG_20200310_145334.jpg

    IMG_20200310_145344.jpg

  6. #6
    Advanced Tuner Blue Bee's Avatar
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    What is your aircharge when this happens, as in just before, and just after? Yes, there is a couple tables missing that control SRV, so you may not be able to fix this.

  7. #7
    I logged it in the first post. It changes very slightly. A few hundredths. Kinda figured we were missing tables.