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  1. How to get the file:

Go into Main Menu, ECM, “get stock file of truck”

A file name STOCK.RMN will be saved on SD card of tuner.

If you have a MM3 tuner the file is named: STOCK.MM3

Send the file with a note of your Order # to:

1 review for Custom Tunes | Package 4

  1. Anthony Madeiros (verified owner)

    It really works perfect!! I have 2019 Ram 3500 I’m doing 23mpg on highway. Everyone that have Cummins truck should have it The truck turn in a monster. With straight pipe installed they can make it whistle! Everybody it’s taking videos of my truck at the Manhattan streets. Also they are very responsive for any questions or concerns. Here’s my 5 starts

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