GMC Sierra 6.6 V8 445hp chiptuning
2017– · Diesel · ECU: Delco E41
Stage 1: +55 hp & +116 Nm
GMC Sierra 6.6 V8 445hp · 445 hp · 1234 Nm
Power+55 hp · +12%
Stock445hp
Stage 1500hp
Torque+116 Nm · +9%
Stock1234Nm
Stage 11350Nm
Engine ECU
Read methods
Available options
With an individually developed Stage 1 tuning file, the GMC Sierra 6.6 V8 445hp with 445 hp and 1234 Nm gets 500 hp and 1350 Nm – an increase of +55 hp (12%) and +116 Nm. The file is created by our tuning engineers for your exact software version on the Delco E41 ECU and is delivered via our file service portal in 5–15 minutes. Options such as DPF OFF, DTC Removal, EGR OFF can be combined in the same file.
Values are guide values from our dyno and comparable vehicles. Actual results depend on condition, hardware and fuel quality. Use only where legally permitted.
Technical data
| Fuel | Diesel |
| Displacement | 6359 CC |
| Compression ratio | 16.0 : 1 |
| Bore × stroke | 103.0 X 99.0 mm |
| Engine code | DURAMAX L5P |
Other engines: GMC Sierra 2017–
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