MM3 Guide
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1. Always make sure you have newer batteries less then 12 months old so unfortunately, the battery industry has massively dropped in quality since 2020 the average lifespan for a battery since 2020 is around 12 months to be able to withstand and hold proper voltage.
2. Any aftermarket accessories need to be unplugged and their fuses need pulled.
3. ALWAYS be sure to Put a battery charger on the truck, set it at 12 volts and 15amps to keep the voltage above 12.5 volts when flashing the truck. Do not use a jump box, just a simple Real High quality battery charger. If volts drop below 12.5 volts ECM damage can occur. Do not flash ECM if volts are under 12.5.
4. Always tune the truck before removing parts, Do not remove parts until the tuning process has been complete Be very very carefully with all hardware connections be gentle with all cable plugs do not force anything and make sure they are securely fasten before programming your truck and double check everything.
FOR MM3 DEVICE INSTALL & TUNE FILE PROGRAMMING VIDEO CLICK HERE
HELPFUL MM3 TUNING MANUAL CLICK HERE
HELPFUL MM3 USER GUIDE CLICK HERE
HOW TO CHANGE POWER LEVELS AND IDLE TUNES
(Both Tuners Use Similar Manuals)
MM3 & RaceMe Ultra Installation Hardware Manuals CLICK HERE