6.4 V8 SRT8 - 477ch Tuning
Jeep Grand Cherokee — Detailed power and torque gains by stage.
Gains by stage(4)
Power
477 hp
Torque
637 Nm
essence
Power
477→500ch
+23 ch
+5%
Torque
637→668Nm
+31 Nm
+5%
OriginalTuned
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Everything about 6.4 V8 SRT8 - 477ch tuning
Tuning the 6.4 V8 SRT8 - 477ch found in the Jeep Grand Cherokee 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 Jeep Grand Cherokee 6.4 V8 SRT8 - 477ch, tuning delivers up to +73 hp and +93 Nm depending on the stage. Stock vs tuned figures:
| Stage | Power | Torque | Indicative price |
|---|---|---|---|
| Stage 1 | 477 → 500 hp | 637 → 668 Nm | — |
| Stage 2 | 477 → 550 hp | 637 → 730 Nm | — |
| E85 Flexfuel | 477 → 477 hp | 637 → 637 Nm | — |
| E85+ | 477 → 500 hp | 637 → 668 Nm | — |
Frequently asked questions
What gains can I expect from tuning the 6.4 V8 SRT8 - 477ch?
Tuning the 6.4 V8 SRT8 - 477ch (Jeep Grand Cherokee) 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 6.4 V8 SRT8 - 477ch?
Yes, the 6.4 V8 SRT8 - 477ch 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 Jeep Grand Cherokee 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 Jeep Grand Cherokee?
Use the ChiptuneMAP directory to find a certified tuner near you. Compare reviews, prices and specialties.