Ram 68RFE (6.7 Cummins) transmission tune
2007.5–2024 Ram 2500/3500/4500/5500 — 6.7 Cummins
What we change on this platform
Firmer, quicker upshifts using the line-pressure headroom the stock valve body actually has. Converter lockup turned into a clean on/off apply instead of the factory slip strategy, which is where most of the shudder complaints come from. Earlier lockup and longer gear holds in Tow/Haul. Skip-shift behavior reduced so it walks through the gears. Tire size and speed limiter with the driveability package.
What your truck needs first
By model year, from HP Tuners' current support list. This is the owner's side of the job — interface, licensing credits, and any one-time module upgrade.
| Model years | Module | Status | Interface | Credits |
|---|---|---|---|---|
| 2007.5–2009 | CM2100 ECM + separate 68RFE TCM | Ready to tune Two modules to license; both read over OBD. | MPVI2 or newer | ECM + 2 for the TCM |
| 2010–2017 | CM2200 / CM2350 ECM (68RFE tables live in the ECM) | Ready to tune No module service. The transmission is tuned inside the Cummins ECM file. | MPVI2 or newer | ECM credits only |
| 2018 | CM2350 ECM | Ready to tune 2018+ Ram has a security gateway — the Smart Access cable is required to read and write. | MPVI2 or newer + Dodge 2018+ Smart Access cable | ECM credits only |
| 2019–2021 | CM2450 ECM | Ready to tune No module service. 2019–2020 trucks that had the Y78 recall carry a different base calibration — send a fresh read. | MPVI3 or MPVI4 + Smart Access cable | 6 |
| 2022–2024 | CM2450B ECM | Send-in service first HP Tuners' RAM CM2450B ECM Service ($1,499.99 send-in), or a Direct OBDII upgrade done through an authorized HP Tuners reseller with no shipping. Transmission-only tuning still needs it — the 68RFE tables are in the ECM. | MPVI3 or MPVI4 + Smart Access cable | 6 |
| 2025+ | — | Not tunable yet Not supported by HP Tuners yet. | — | — |
What you send us
- A fresh read of the vehicle saved as a .hpt file, from a module that's already upgraded if yours needs it
- Your mod list, if anything's been changed: converter, gears, tires, lift, built unit
Price
$179 for the Transmission Tune, $249 with the driveability package. One business hour turnaround, one revision included.
Order the Ram 68RFE (6.7 Cummins) tune