Remote ECU tune · 6.7L Cummins I6 turbo-diesel (CM2450/CM2450B)
A custom Stage 1, 2 or 3 calibration for your RAM 2500/3500 6.7 Cummins (2019-2024), built by hand by a real tuner from your own stock file and datalog, and back with you within three hours of the file arriving. We tune these cars remotely, worldwide: you read and flash with your own HP Tuners interface, and you pay only once the tune is delivered.
Stock vs tuned
From the factory the RAM 2500/3500 6.7 Cummins (2019-2024) makes 370 hp and 850 lb-ft (1,152 Nm). A Stage 1 tune typically adds 30–70 hp and 21–103 lb-ft, for around 400–440 hp in total. With bolt-ons and a Stage 2 calibration that grows to +70–115 hp, and a Stage 3 build — maximum-effort tune with intake and exhaust upgrades — typically lands at 485–500 hp.
| Stage | Added power | Added torque | Total power | Total torque |
|---|---|---|---|---|
| Stock | — | — | 370 hp | 850 lb-ft (1,152 Nm) |
| Stage 1 | +30–70 hp | +21–103 lb-ft (+28–140 Nm) | 400–440 hp | 870–953 lb-ft (1,180–1,292 Nm) |
| Stage 2 | +70–115 hp | +103–184 lb-ft (+140–250 Nm) | 440–485 hp | 953–1,034 lb-ft (1,292–1,402 Nm) |
| Stage 3 | +115–130 hp | +184–263 lb-ft (+250–357 Nm) | 485–500 hp | 1,034–1,113 lb-ft (1,402–1,509 Nm) |
Typical gains from published dyno results; your car will vary with fuel, mods and conditions.
Tuner's notes
Figures are for the 68RFE standard-output truck (370 hp / 850 lb-ft); the Aisin high-output truck starts at 420 hp / 1,075 lb-ft. On the 68RFE the transmission, not the engine, is the usual limit at the upper power levels.
Supported versions
HP Tuners lists 2 RAM 2500/3500 6.7 Cummins (2019-2024) entries covering 2019–2024, with 6.7-litre engines, diesel versions included. Interface: MPVI3/4 for some years.
| Years | Model / engine as HP Tuners lists it | Controller | Credits | Interface |
|---|---|---|---|---|
| 2019–2021 | 2500/3500/4500/5500 6.7L Cummins (CM2450) | Engine | 6 | MPVI2/2+/3/4 |
| 2022–2024 | 2500/3500/4500/5500 6.7 Cummins (Diesel) (CM2450B) | Engine | 6 | MPVI3/4 |
Support data per HP Tuners' supported-vehicle list (June 2026). Check your exact car on HP Tuners' vehicle list before you buy credits.
Stages & prices
One flat price per stage, the same for every car: $250 for Stage 1, $450 for Stage 2 and $650 for Stage 3. Ordering is free and you pay only once the finished tune is delivered. 2 free revisions are included with every order. Gearbox (TCM) shift tuning is included wherever your car's transmission controller can be accessed.
Software only. Every map in the CM2450 / CM2450B is recalibrated for the RAM 2500/3500 6.7 Cummins (2019-2024) as it sits today — spark, fuelling, throttle response and limiters — against the datalog you send.
For a RAM 2500/3500 6.7 Cummins (2019-2024) with bolt-ons fitted — intake, exhaust, headers or downpipe, and an intercooler where the car has one. The airflow and fuelling are rebuilt around the hardware you actually have.
Stage 3 on the RAM 2500/3500 6.7 Cummins (2019-2024) means maximum-effort tune with intake and exhaust upgrades. The fuel, spark and boost maps are written from scratch for your exact combination.
Typical gains from published dyno results; your car will vary with fuel, mods and conditions.
Before you order
How it works
FAQ
Typically 30–70 hp and 21–103 lb-ft (28–140 Nm) over the stock 370 hp, for around 400–440 hp in total. Typical gains from published dyno results; your car will vary with fuel, mods and conditions.
An HP Tuners interface (we recommend the MPVI4), the HP Tuners credits needed to license the CM2450 / CM2450B for writing, and your stock file plus a datalog of a drive. You read and flash the car yourself; we build the calibration.
Your custom tune is delivered within three hours of your stock file arriving. Six tuners work three shifts, so a file that lands in the middle of the night is picked up just as fast.
Stage 1 is $250, Stage 2 is $450 and Stage 3 is $650, flat. Ordering is free and you pay only once the finished tune is delivered. 2 free revisions are included with every order.
Stage 3 on the RAM 2500/3500 6.7 Cummins (2019-2024) means maximum-effort tune with intake and exhaust upgrades. The maps are written from scratch for your build, and typical results are 115–130 hp over stock. Typical gains from published dyno results; your car will vary with fuel, mods and conditions.
