2019-2021 6.7L Cummins EFI Live Custom Tuning

2019–2021 6.7L Cummins EFI Live Custom Tuning

Unlock Your Cummins’ Potential

Take your 2019–2021 6.7L Cummins to the next level with our EFI Live Custom Tune Pack. Whether your goal is improved fuel economy, better towing performance, stronger throttle response, or increased horsepower, our custom tuning is built around your truck and your intended use.

Custom Power Levels

Choose from five available power levels:

• Level 1: 30 HP
• Level 2: 60 HP
• Level 3: 90 HP
• Level 4: 120 HP
• Level 5: 180 HP

Each tune is customized using the vehicle information you provide to help deliver strong drivability, responsive power, and dependable performance.

Switch on the Fly Tuning

For customers selecting Switch on the Fly, a CSP5 switch is required to change between the five available power levels without reflashing the truck.

A CSP5 switch is included with the Switch on the Fly tuning option.

View the CSP5 Switch → 2006–2021 Cummins CSP5 Switch – Proven Power Solutions

Cummins Bypass Cable Required

2019–2021 Cummins trucks require a 2018–2024 Cummins Bypass Cable for flashing through the OBD-II port.

This special patch cable is used to bypass the factory security system, allowing the ECM to be flashed through the vehicle's OBD-II port.

The bypass cable is required and must be available when flashing your custom tuning.

View Cummins Bypass Cable → 2018–2024 Cummins Bypass Cable – Proven Power Solutions

Optional Transmission Tuning

Transmission tuning is available for trucks equipped with the 68RFE automatic transmission.

Transmission tuning can help improve:

• Shift timing and firmness
• Line pressure strategy
• Torque management
• Overall transmission response
• Performance while towing or under heavy load

Select Transmission Tuning when ordering if you would like transmission calibration included.

EFI Live Device

An EFI Live AutoCal or compatible EFI Live device is not included unless specifically stated with the product.

If you already own an EFI Live device, make sure to provide the requested device information when placing your order.

Information Required

To build your custom tune, please provide:

• Complete 17-character VIN
• Vehicle modifications
• Intended use
• Desired tuning information
• Any other relevant vehicle details

Incomplete or incorrect information may delay your tune.

Custom Tuning Policy

All tuning files are built specifically for the vehicle information provided at the time of purchase.

All sales on custom tuning are final and non-refundable.

Important Use Notice

Some tuning configurations or vehicle modifications may be intended only for competition, racing, off-highway, or other legally permitted applications.

It is the vehicle owner’s responsibility to ensure the vehicle and tuning configuration comply with all applicable federal, state, and local laws.