Hummer Remapping Service
A Hummer is heavy, thirsty and impossible to miss, and a remap helps with at least one of those. You get stronger pull from low revs, which makes a big 4x4 feel lighter, and a quicker response when you need it. We do it as part of our SUV remapping, with a map written in-house for your engine.
Remap Calculator
See what your Hummer makes now and after a remap, then book it in.
- All work carried out by a qualified motorsport engineer
No figures are available for this engine yet.
Why Remap Your Hummer?
If you tow, the extra torque is what you'll notice first. A V8 Hummer with one of our custom exhausts sounds the way it looks, and we remap Jeep and other big 4x4s too.
Hummer Petrol Engine Tuning
The H3 came with 5-cylinder 3.5 and 3.7 petrol engines and a 5.3 V8, and each one gains from a remap. The H1 and H2 are on the calculator too.
Here are 2 H3 engines at Stage 1, from the calculator:
- H3 3.7: 242 hp and 328 Nm as standard, 260 hp and 350 Nm at Stage 1
- H3 5.3 V8: 300 hp and 430 Nm as standard, 320 hp and 450 Nm at Stage 1
Both are typical for a standard vehicle in good health, and a Hummer that's done a lot of off-road work gets checked over first.
Check your Hummer in the Remap Calculator, then book your remap or ring 087 744 2633.
Benefits of ECU Remapping
Remapping your Hummer with JTK Remapping Ireland has several benefits, including:
- ✅ Unlocking Hidden Power
- ✅ Better Fuel Economy & MPG
- ✅ Up to a 35% increase in BHP on a Stage 1 Remap
- ✅ Up to 50% more torque
- ✅ Up to 20% better fuel economy
- ✅ Better throttle response
- ✅ Safer overtaking & acceleration
- ✅ Lifetime software warranty
- ✅ EGR & DPF solutions available
- ✅ DSG/TCU tuning
- ✅ Car, 4X4, commercial, truck & tractor ECU remapping
- ✅ Vehicle & mobile diagnostics
At our workshop in Dungarvan
What happens on the day
Check your Hummer in the Remap Calculator or give us a call, then book it in. On the day it goes on our 4WD dyno for a before run, the map is written for your engine, and an after run shows you the difference in power and torque.
If your Hummer is an automatic, ask us about a gearbox (TCU) remap on the same visit.
Trusted by thousands of customers
Perfect experience from start to finish. Very easily dealt with. Got my mk7 golf r remapped difference is like night and day. Can’t thank the team enough
Pa P.
Great service, really happy with the remap and downpipe. Car feels brilliant now - highly recommend!
Cian W.
So I got a hybrid turbo from muchboost installed in my Mercedes c220 and was advised to get a custom remap on a dyno so I contacted John got it booked in and he also offered hydro clean as an option and It was worth every penny I couldn’t believe the difference it made plenty of power and ticking over like a dream thanks again
Keith T.
Hummer models we remap
We remap the full Hummer range, including:
- Hummer H1
- Hummer H2
- Hummer H3
Hummer remap questions
Book Your RemapWhat will my Hummer make after a remap?
Pick your model, year and engine in the Remap Calculator for the standard and remapped figures. On the day, the dyno shows what your own car makes before and after.
Can you remap the gearbox on an automatic Hummer?
Yes. Ask us about a gearbox (TCU) remap on the same visit, for quicker shifts and room for the extra torque.
How do I book my Hummer in?
Check it in the Remap Calculator above and press Book Your Remap, or ring us on 087 744 2633.
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