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Thread: MM3 Issues!

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    Slick2wd's Avatar

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    MM3 Issues!

    Recently my MM3 has started acting weird, and I’m hoping maybe you guys can help.

    The truck seems to run fine, and all but the MM3 data is off, the rail pressure, boost, trans temp, and pretty much all the readings.

    I have set up all read way low, for example, while driving down the road, and the boost fluctuates from low single digits into negative numbers.

    And rail pressure reads 5-6k. It didn’t use to do this; it just recently started.

    Any ideas?

    Thanks!

    2011 2500 2WD, 5” turbo back, 4” RPI Intake, MM3, Thuren shackles flipped to lower rear, 20x10 Gear Big Blocks, 305/50R20 Nitto’s

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    MOD watersupply189's Avatar

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    Re: MM3 Issues!

    Have you tried returning to stock and reloading your tune again?

    Also, make sure your batteries are fully charged before doing this.


    2016 Ram Laramie 3500, G56, 6.7, CC, 4x4

    2016 RAM 3500 4x4 Laramie Crew Cab
    Cummins,G56, Rough Country level, Morimoto LED fog lights, LED headlights, Lund Attitude Steps sprayed with Line-X, DRL's Activated, 35x12.50R18 Falken Wildpeak ATW3, Fuel Vapor Wheels Matte Black w/Dark Tint, A.R.E. Truck cap and swing boxes

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    Re: MM3 Issues!

    Quote Originally Posted by watersupply189 View Post
    Have you tried returning to stock and reloading your tune again?

    Also, make sure your batteries are fully charged before doing this.

    2016 Ram Laramie 3500, G56, 6.7, CC, 4x4
    Just thinking out loud here, do you have to do the trans relearn process when returning to stock and reloading/flashing the tune back in?


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    Slick2wd's Avatar

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    Re: MM3 Issues!

    I have not, and I will try, though.

    2011 2500 2WD, 5” turbo back, 4” RPI Intake, MM3, Thuren shackles flipped to lower rear, 20x10 Gear Big Blocks, 305/50R20 Nitto’s

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  9. Top Of Page | #5
    Slick2wd's Avatar

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    Re: MM3 Issues!

    Quote Originally Posted by watersupply189 View Post
    Have you tried returning to stock and reloading your tune again?

    Also, make sure your batteries are fully charged before doing this.


    2016 Ram Laramie 3500, G56, 6.7, CC, 4x4
    I have not, but I will try.

    2011 2500 2WD, 5” turbo back, 4” RPI Intake, MM3, Thuren shackles flipped to lower rear, 20x10 Gear Big Blocks, 305/50R20 Nitto’s

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    17_G56's Avatar

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    Re: MM3 Issues!

    Generally, MM3 weirdness is from weak batteries.

    Given the freezing cold temperatures we've all experienced the last week, your batteries are probably weak.

    Throw them on a trickle charger to see if you can get them to come back up or replace both batteries and report back.

    * '17 CCLB G56 Laramie 4x4 - MM3 Tuned & Low Carb, Banks Grid Heater Delete, TV Delete, S&B CAI, 4" Turbo Back, Flo-Pro Muffler, Valair Quiet Dual Disc, CAT Fuel Filter Kit, Leveled, 18" Method 315 in Gold, 35" Toyo OC A/T II, HID Projectors, HLR LED Fogs, Infinity Speaker Upgrades, Line-X Platinum, WeatherTech Guards, XPEL Prime XR+
    * '02 WS6 M6 - ASC#3001 "Last of the Breed" - Full Suspension, CIE, on 18x11 Copper/Black CCW Classics.
    * '19 Triumph Speed Triple RS - Lots of Twill Carbon Fiber, SC Project Low Mount

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  13. Top Of Page | #7
    Slick2wd's Avatar

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    Re: MM3 Issues!

    Quote Originally Posted by 17_G56 View Post
    Generally, MM3 weirdness is from weak batteries.

    Given the freezing cold temperatures we've all experienced the last week, your batteries are probably weak.

    Throw them on a trickle charger to see if you can get them to come back up or replace both batteries and report back.
    Will do, thanks!

    2011 2500 2WD, 5” turbo back, 4” RPI Intake, MM3, Thuren shackles flipped to lower rear, 20x10 Gear Big Blocks, 305/50R20 Nitto’s

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