4.0 DFI GT3 RS - 520ch Tuning
Porsche 991 — Detailed power and torque gains by stage.
Gains by stage(4)
Power
520 hp
Torque
470 Nm
essence
Power
520→545ch
+25 ch
+5%
Torque
470→500Nm
+30 Nm
+6%
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Everything about 4.0 DFI GT3 RS - 520ch tuning
Tuning the 4.0 DFI GT3 RS - 520ch found in the Porsche 991 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 Porsche 991 4.0 DFI GT3 RS - 520ch, tuning delivers up to +80 hp and +80 Nm depending on the stage. Stock vs tuned figures:
| Stage | Power | Torque | Indicative price |
|---|---|---|---|
| Stage 1 | 520 → 545 hp | 470 → 500 Nm | — |
| Stage 2 | 520 → 600 hp | 470 → 550 Nm | — |
| E85 Flexfuel | 520 → 520 hp | 470 → 470 Nm | — |
| E85+ | 520 → 545 hp | 470 → 500 Nm | — |
Frequently asked questions
What gains can I expect from tuning the 4.0 DFI GT3 RS - 520ch?
Tuning the 4.0 DFI GT3 RS - 520ch (Porsche 991) 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 4.0 DFI GT3 RS - 520ch?
Yes, the 4.0 DFI GT3 RS - 520ch 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 Porsche 991 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 Porsche 991?
Use the ChiptuneMAP directory to find a certified tuner near you. Compare reviews, prices and specialties.