NEW: V.3.1 is now ONLINE

GMC Sierra 6.6 V8 445hp

Stage 1
Stage 2 (+15%)

Power (BHP)

Standard 445 hp hp
Tuned 500 hp hp
Difference +55 hp hp

Torque (Nm)

Standard 1234 Nm Nm
Tuned 1350 Nm Nm
Difference +116 Nm Nm

Specifications

MethodChiptuning
Tuning TypeStage 1
Cylinder Content6359 CC
Compression Ratio16.0 : 1
Bore X Stroke103.0 X 99.0 mm
Type of FuelDiesel
Engine ECUDelco E41
Engine NumberDURAMAX L5P

Dyno Graph

Supported Tools

HP Tuners MPVI2

Options

EGR OFF DTC Removal DPF OFF