6.2i V8 - 398ch Tuning
Hummer H2 — Detailed power and torque gains by stage.
Gains by stage(4)
Power
398 hp
Torque
562 Nm
essence
Power
398→410ch
+12 ch
+3%
Torque
562→580Nm
+18 Nm
+3%
OriginalTuned
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Everything about 6.2i V8 - 398ch tuning
Tuning the 6.2i V8 - 398ch found in the Hummer H2 is one of the most popular performance upgrades. This engine offers excellent potential for power and torque gains.
On ChiptuneMAP, find verified gain data for each stage, compare tuner prices and find the ideal professional for your project.
Gains summary by stage
On the Hummer H2 6.2i V8 - 398ch, tuning delivers up to +52 hp and +78 Nm depending on the stage. Stock vs tuned figures:
| Stage | Power | Torque | Indicative price |
|---|---|---|---|
| Stage 1 | 398 → 410 hp | 562 → 580 Nm | — |
| Stage 2 | 398 → 450 hp | 562 → 640 Nm | — |
| E85 Flexfuel | 398 → 398 hp | 562 → 562 Nm | — |
| E85+ | 398 → 410 hp | 562 → 580 Nm | — |
Frequently asked questions
What gains can I expect from tuning the 6.2i V8 - 398ch?
Tuning the 6.2i V8 - 398ch (Hummer H2) delivers significant power and torque gains depending on the chosen stage. Stage 1, with no hardware modifications, offers the best gain-to-reliability ratio.
Is tuning reliable on the 6.2i V8 - 398ch?
Yes, the 6.2i V8 - 398ch is known for its reliability when tuned, especially at Stage 1. It's essential to use a certified tuner with maps tailored to your engine.
How much does Hummer H2 tuning cost?
Prices vary by stage and tuner. Check our directory to compare rates from professionals near you.
Should I get a tuning box or an ECU remap?
ECU remapping (modifying the engine control unit map) delivers better results and integration than a plug-in tuning box. It's customized for each engine.
How do I find a tuner for my Hummer H2?
Use the ChiptuneMAP directory to find a certified tuner near you. Compare reviews, prices and specialties.