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.
Comparisons are calculated from our own recorded Stage 1 figures.
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.
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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 before proceeding.
