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The DiabloSport PCM-DR578S21 is a professionally unlocked, vehicle-programmed modified PCM for 2021 RAM 1500 models with the 5.7L engine and 8-speed transmission, except E-Torque. A compatible DiabloSport tuning device is required to install a performance tune.
This modified PCM is programmed for the specified vehicle and is compatible with DiabloSport tuning products.
A DiabloSport tuning device, such as an inTune i3 or Trinity 2, is required to install a performance tune. It is not compatible with other tuning brands at this time.
For 2021 and newer vehicles, save the stock calibration with your tuning device before removing the factory PCM. Refer to the instructions supplied with the unlocked PCM.
Emissions status: Legal under the provisions of EPA's Tampering Policy - Not legal in CA.
Enter your 17-digit VIN at checkout (and your PCM calibration ID if you have it). DiabloSport programs the replacement PCM to your vehicle before it ships, so it is ready to install. Not sure which kit your vehicle needs? Send us your VIN and we will confirm.
It fits 2021 RAM 1500 models with the 5.7L engine and 8-speed transmission, except E-Torque.
A DiabloSport tuning device, such as an inTune i3 or Trinity 2, is required. This PCM is not compatible with other tuning brands at this time.
On 2021 and newer vehicles, save the stock calibration with your tuning device before removing the stock PCM. Follow the instructions supplied with the unlocked PCM.
Emissions notice: not legal for sale or use in California or on any pollution-controlled vehicle where prohibited. Check your state's rules before ordering.
Fitment help: call 954-507-6261 or email sales@americanmuscleperformance.net with your VIN and we will confirm the right part before you order.
