BHP+20 hp (7%)
Standard
305 hp
Tuned
325 hp
Torque+30 Nm (4%)
Standard
820 Nm
Tuned
850 Nm
Suitability
Moderate (5.5/10)Gains Profile
Limited headroomHeadroom
LowHummer H1 6.6 V8 305hp ECU Remapping
Considering an ECU remap for your Hummer H1 6.6 V8 305hp? A Stage 1 remap can take this -> 2006 diesel engine from 305 BHP to 325 BHP and from 820 Nm to 850 Nm of torque (turbocharged). This engine scores 5.5/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your Hummer H1 can achieve.
How this engine compares
- 14%of the 9,842 engines we hold gain data for see a smaller power increase
- 17%of engines with torque data see a smaller torque increase
Comparisons are calculated from our own recorded Stage 1 figures.
Assessment
The Hummer H1 6.6 V8 305hp is a 6.6L turbocharged diesel engine producing 305 BHP and 820 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 325 BHP and 850 Nm — a gain of around 20 BHP (7%) and 30 Nm (4%).
This engine has moderate remap suitability, though the available headroom is limited, so gains are modest compared to higher-output variants. The tuning headroom is classified as limited, based on the percentage gain available from the factory output.
Considerations: High tuned torque: check transmission torque capacity and service history.. Older diesel: injector, turbo and intake condition can affect results; ensure maintenance is up to date.
All figures shown are typical estimates based on aggregated Stage 1 data for this engine variant. Actual results depend on vehicle condition, mileage, and the chosen tuning method. We recommend discussing your specific vehicle with a qualified remap professional.
Considerations
!High tuned torque: check transmission torque capacity and service history.
!Older diesel: injector, turbo and intake condition can affect results; ensure maintenance is up to date.
Technical Specifications
- Fuel Type
- Diesel