Hummer offers a diverse engine lineup — approximately 17% diesel and 83% petrol across 6 variants in our database. Both fuel types respond well to Stage 1 remapping, with turbocharged diesel engines typically delivering the largest gains in both power and torque.
Across the Hummer range, Stage 1 remap gains typically fall between 18 and 22 BHP (averaging 20 BHP) and 20 to 30 Nm of additional torque (averaging 24 Nm). Turbocharged variants see the largest improvements, while naturally aspirated engines benefit from refined throttle mapping and ignition advance.
A Stage 1 ECU remap optimises your Hummer's factory software to unlock its full potential — no hardware changes required. Here are the typical gains across the range.
+18–22 BHP across the range
+20–30 Nm across the range
17% of variants are turbocharged
Software-only — no hardware modifications needed
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