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  1. 2010-2012 Powertrain
    Hey, i got a 2012 dodge ram 3500. i just got this truck a week ago and it started overheating today on the highway, i was doing about 70 and wasn’t on it. the temp shot up to 240 so i pulled over let it cool down and fan kicked on and everything it came back down to 210ish, as i got back on the...
    cummins help mm3 overheating tuner
  2. 2013-2018 General Discussion
    Worth buying a mm3 used for $400 ? I figure I’ll have to buy a new vin license for it and then tunes. But seems reasonable or is it more of a headache?
    mm3 tunes
  3. 2019+ Performance Parts Discussion
    Anyone using the MM3 ever have it display split-second sporadic readings across all parameters you're monitoring. For example it says i was in gear 54 or my rail pressure was 96k or trans temp was 560 degress. They're split-second spikes. Unplugged everything multiple times, updated software...
    mm3 readings tuner
  4. 4th Gen Performance Parts Discussion
    I have a 2015 Ram 3500 with a Cummins 6.7 diesel engine. I deleted it and installed MM3 and a Fish CSP5 switch. The technician flashed the ECM and the truck accepted the tunes. After flashing the ECM the CEL was on. A search revealed an error code of U0101 indicating a loss of communication with...
    efi live mm3 u0101
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