2025 3.0 Duramax Tuner. You can now electronically increase your horsepower, torque, and transmission performance without the need to remove your ecm or tcm. Speed limiter adjustments for tire size.

3.0l duramax power on the way. Combining the ecm tuning with tcm tuning is the ultimate way to match your transmission holding capacity, shift schedule, and torque converter clutch engagement.