2019-2024 Ram 6.7L Cummins ECM Tuning

The ECM on the 2019-2024 Ram 6.7L Cummins

2019-2020 trucks were built with a Bosch CP4.2 high-pressure pump. All of them were recalled under Y78 (NHTSA 21V-880) to have the CP4.2 replaced with a CP3 and the PCM reflashed, and 2021-2024 trucks came from the factory with the CP3. After the recall, a 2019-2020 truck runs a CP3 calibration, and any calibration product, including what goes into a replacement module, must match the installed pump. Output and transmission matter too. Standard-output trucks use the 68RFE, high-output 3500s use the Aisin AS69RC, and the two have different TCM strategies.

What we carry

• A brand-new Mopar CM2450 Cummins ECM, listed for 2019-2021 trucks.
• EFI Live AutoCal V3, blank, a standalone device for loading calibration files and logging data.
• Calibrated Power no-drill DSP switch bracket, listed for 2006-2022 5.9L and 6.7L Cummins.

Find more in our tuners collection or on the Cummins hub.

Fitment notes

The ECM listing stops at 2021, so check with us before ordering for a 2022-2024 truck. Whatever calibration goes in the module has to keep the truck's EGR, DOC, DPF and SCR systems working, and we have not confirmed a CARB EO calibration for this engine. Verify by VIN.

Frequently asked questions

Will the Mopar CM2450 ECM fit my 2023 Ram 3500?

It is listed for 2019-2021 trucks only. For a 2022-2024 truck, call the shop with your VIN and we will check what matches your engine and transmission.

My 2020 had the CP4 recall done. Does that matter for a replacement ECM?

Yes. After Y78 the truck runs a CP3 calibration, and anything loaded into a replacement module must match the installed pump. Match the output rating and transmission as well, since standard- and high-output trucks use different TCM strategies.

Not sure what fits? Call the shop at the number in the header, or use the fitment checker on any product page. We install everything we sell.