GMC Sierra · 2008 - 2013

6.6 Duramax 365hp Stage 1 tuning

ECU remap / chiptuning file for the GMC Sierra 6.6 Duramax 365hp. Figures below compare the stock calibration with our tuned file, reviewed by experienced calibrators with safety limits respected.

Power
365 hp 395 hp +30 hp
Torque
894 Nm 945 Nm +51 Nm

Engine specifications

Engine code
LMM
Fuel
Diesel
Displacement
6599 cc
Compression
16.8 : 1
Bore × Stroke
103.0 X 99.0 mm
ECU
Bosch EDC16C42, Bosch EDC17CP18