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Thread: I Purchase a Used MM3 Tuner

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    I Purchase a Used MM3 Tuner

    Hello just become Lifetime Member.

    I purchased a used MM3 tuner and I have it VIN unlocked.

    It has the previous owners tune installed.

    I don't have it installed on my truck yet.

    Without purchasing any tunes am I able to do anything with it while I'm waiting to purchase my tunes?


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    I WILL STAND! AK Bob's Avatar

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    Re: I Purchase a Used MM3 Tuner

    I believe you should be able to use it to monitor pressures and temperatures etc.

    You will probably get the pesky agree to terms screen on the MM3 every time it starts up until you install your new tunes.


    2014 RAM 3500 (Aisin) 3.73 4X4 Limited Crew Cab Long Bed DRW. Oil Bypass Filter, 50 Gallon auxiliary fuel tank.

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    2014 RAM 3500 (Aisin) 3.73 4X4 Limited Crew Cab Long Bed DRW. Oil Bypass Filter, Fuel Filtration Kit, Cold Air Intake, City Diesel Actuator and 50 Gallon Aux Fuel Tank.

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