GMC Sierra 6.6 Duramax 365hp

Stock vs. Tune Maps remap

Measured values for the GMC Sierra 6.6 Duramax 365hp.

	Stock	Remap	Difference
Power	365 HP	395 HP	+30 HP
Torque	894 Nm	945 Nm	+51 Nm

From the factory the GMC Sierra with the 6.6 Duramax 365hp engine (2008 - 2013) delivers 365 HP and 894 Nm on diesel. With a Tune Maps remap the calibration is optimised to 395 HP and 945 Nm – that is 8% more power and 6% more torque, while staying within safe limits for engine and drivetrain. The engine is controlled by a Bosch EDC16C42 / Bosch EDC17CP18 ECU.

Measured values. Results can vary with vehicle condition, fuel quality and hardware.

Engine & ECU data