Remapping Hummer H3

4 engines · 1 generations — up to +13 hp

Compare every Hummer H3 engine we remap: stock figures, Stage 1 gains and prices, plus ethanol (E85) options.

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Search for your vehicle to see remapping options, expected gains and our prices.

Hummer H3 — engines
Engine	Stock	After Stage 1	Gain	E85 ethanol	From
2005
3.5i 220ch	220 hp	230 hp	+10 hp	Ethanol conversion available	€590	→
3.7i 242ch★	242 hp	255 hp	+13 hp	Ethanol conversion available	€690	→
5.8i V8 300ch	300 hp	—	—	Ethanol conversion available	Unavailable	→
5.3L 305ch	305 hp	—	—	Ethanol conversion available	Unavailable	→

Top 2 engines

Best petrol gain 3.7i 242ch 242 hp → 255 hp · +13 hp · €690 View

Best gain / price ratio 3.7i 242ch 242 hp → 255 hp · +13 hp · €690 View

Switch to ethanol (E85)

4 Hummer H3 engines are compatible with E85 conversion in our catalogue. Ethanol saves up to 50% at the pump and cuts your carbon footprint — with no compromise on performance. Good for your wallet and for the planet.

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E85-compatible engines

Other models Hummer

H2 2

See all models Hummer

FAQ

What gains can I expect on a Hummer H3?

Gains depend on the exact engine: the comparison table above shows stock vs Stage 1 power and torque for each Hummer H3 version.

How much is a Hummer H3 Stage 1?

From €590. Pick your engine for the exact price.

Is E85 conversion available on the Hummer H3?

Yes, 4 Hummer H3 engines are E85-compatible in our catalogue. Ethanol can halve your fuel bill and shrink your carbon footprint, with performance left intact.

Where can I get my Hummer H3 remapped?

Our workshop is in Lathuile (74210), at the southern end of Lake Annecy, by appointment, Monday to Friday 9am–6pm and Saturday 8am–12pm. We can also come to your home within about 1h30 of Annecy (power socket and internet connection required; travel costs may apply). Find Alpes Reprog on Google Maps