2019–2024 RAM 68RFE CUSTOM TRANSMISSION TUNING 

WORKS WITH EZLYNK / HP TUNERS 

CUSTOM TRANSMISSION CALIBRATION | STOCK EMISSIONS-COMPLIANT VEHICLES ONLY

Take control of your 68RFE transmission with custom transmission tuning from JAT Supply Co. Our custom calibrations are designed for customers looking to optimize their transmission's shift characteristics, torque converter operation, line pressure, torque management, and overall drivability.

Whether you're looking for firmer shifts, improved torque converter lockup, adjusted shift points, or refined transmission behavior, our custom transmission tuning allows you to tailor transmission parameters to your driving preferences.

THIS PRODUCT IS FOR TRANSMISSION TUNING ONLY. NO ENGINE TUNING IS INCLUDED.

CUSTOM TUNING FEATURES

Our 68RFE transmission tuning offers a wide range of adjustable parameters, including but not limited to:

• Underdrive Pulse Disable – Ability to disable underdrive clutch pulse strategies.

• Low/Reverse Sprag Modifications – Custom calibration adjustments to low/reverse sprag-related transmission strategies.

• Increased Line Pressure – Modified transmission line pressure for improved clutch holding capacity and firmer shifts.

• Stock Line Pressure Option – Retain factory line pressure while modifying other transmission parameters.

• Custom Shift Points – Adjusted upshift and downshift schedules based on customer preferences.

• Torque Converter Shift Changes – Customized torque converter clutch engagement and release strategies.

• Unlocked Torque Converter Shifts – Allow the torque converter to unlock during selected gear changes.

• Locked Torque Converter Shifts – Configure torque converter lockup strategies during selected shifts.

• Early or Delayed Torque Converter Lockup – Adjust lockup timing to suit driving preferences.

• Increased Transmission Torque Limits – Modified transmission torque limit parameters.

• Modified Torque Management – Custom adjustments to transmission torque management strategies.

• Shift Timing Adjustments – Refined shift timing and clutch application characteristics.

• Custom Shift Firmness – Adjustments for smoother or more aggressive shifting.

• Additional TCM Calibration Adjustments – Other supported transmission parameters can be customized based on customer requests.

Available adjustments depend on vehicle configuration, software support, and transmission calibration.

VEHICLE COMPATIBILITY

Supported Vehicles:

• 2019–2024 RAM 2500 6.7L Cummins with 68RFE

• 2019–2024 RAM 3500 6.7L Cummins with 68RFE

• Factory emissions equipment must remain installed and operational.

• Intended for stock, emissions-compliant vehicles only.

IMPORTANT – READ BEFORE PURCHASING

THIS PRODUCT WILL NOT WORK WITH:

• Emissions-deleted vehicles

• Vehicles with modified or removed emissions equipment

• Non-emissions-compliant vehicles

• Vehicles with aftermarket engine tuning or modified engine calibrations

• Modified engine configurations

• Vehicles equipped with AISIN transmissions

This product is exclusively for custom 68RFE transmission tuning on stock, emissions-compliant vehicles.

Engine tuning, horsepower increases, emissions modifications, and engine calibration changes are NOT included.

CUSTOMIZED TO YOUR PREFERENCES

Unlike a generic transmission calibration, our tuning allows customers to request specific transmission behavior based on their driving style and preferences.

Whether you prefer factory-like shifting with improved torque converter strategies or firmer shifts with increased line pressure and modified torque management, we can customize supported parameters to your requested setup.

JAT SUPPLY CO. – CUSTOM DIESEL CALIBRATIONS

Website: JATSupplyCo.com

Phone: 737-297-6619

Email: JATIPOrders@gmail.com