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Thread: 2014 Charger 5.7 Cammed & Supercharged, Surge Issue

  1. #1
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    Nov 2024
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    2014 Charger 5.7 Cammed & Supercharged, Surge Issue

    Hey y'all. I have 2014 charger 5.7 cammed and supercharged.
    Ever since I cammed the car I always have this surging issue mostly when im driving and coasting. This car has been tuned twice when it was cammed, first one was remote and second one was done by local perforamce shop. neither of them couldnt figure out the surge. Local shop assumed it was small vacuum leak. Fast forward to supercharger installed, I had someone remote tune it for me and he couldnt fix the surge either. He said this is best he could get. also assumed i had vacuum leak but i ran a smoke test with snap on machine and it passed and no sign of leak or smoke. I made a post on facebook in hemi group about surging issue. one of the tuner commented and said certain year of 5.7 is missing a table.
    Could someone lead me to what table is missing? Is this something i could fix on my own? Im tired of spend alot of money and cant even get the car running right.

    Mod list:
    -Hellcat supercharger
    -FRP Tomahawk cam
    -hellcat lifters
    -PAC valve springs
    -Pushrods
    -Phaser lockout
    -hellcat oil pump
    -180 t-stat
    -mds delete
    -3200 fti stall
    -longtubes
    -catless
    -runs on 93

  2. #2
    Advanced Tuner Stoopalini's Avatar
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    Nov 2023
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    Central Texas
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    Post the current tune file and a log

    How are you controlling the bypass on the Hellcat supercharger? Is it converted to vacuum control, or maybe you have an electronic controller for the OEM bypass valve?
    2023 Dodge Durango R/T (5.7L) with Tow & Go Package (build thread)
    Gen 5x Whipple 3.0L Supercharger
    Smooth Boost Electronic Boost Controller
    SRT 392 Air Intake Conversion
    92mm Hellcat Throttle Body
    Mighty Mouse Mild SRT Catch Can Setup

  3. #3
    Potential Tuner
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    Nov 2024
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    Yes I'm running smoothboost to control the OEM bypass valve. I leave it on full all times. I did adjusted the knob and the surging issue does not change.

    Here's the log and tune.

    Log drive 4, is driving normal, little surging
    Log Cruising, is coasting thru neighborhood at slow speed, not touching gas pedal

    surge while drive 4.hpl

    Surge crusing.hpl

    2014 charger 5.7 Tomohawk_#26 bailey.hpt

  4. #4
    Senior Tuner LilSick's Avatar
    Join Date
    Jan 2022
    Location
    fountain valley
    Posts
    2,294
    Quote Originally Posted by Emmons421 View Post
    ...neither of them could figure out the surge. Local shop assumed it was small vacuum leak. Fast forward to supercharger installed, I had someone remote tune it for me and he couldnt fix the surge either. He said this is best he could get.
    it is hard to believe that with all those mods and having multiple tuners in this file that both the idle torque throttle and the idle torque spark tables are all still bone stock???

    you either are full of shit or you got ripped off

    hard . )

    try this -
    Attached Files Attached Files
    tuned by tank [email protected]

  5. #5
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    Nov 2024
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    Not sure why you assumed I?m making this up. Idk why both idle torque throttle and idle torque spark still stock. There?s only one tuner in this file tuning supercharger and cam for me. I was giving a backstory before I did supercharger install. I had a previous tuner who tune my car when it just cam. Both tuners couldn?t figure out surge issue and just push it under the rug like it?s not big deal. I will give your a file a shot. Thanks for taking for your time looking into it.