Infiniti FX 2008-2013 5.0 V8 390hp
Real standard and upgraded performance figures for the 5.0 V8 390hp engine in the Infiniti FX 2008-2013.
Below: measured output for the 5.0 V8 390hp in the Infiniti FX 2008-2013, standard vs. remapped, in both horsepower and torque.
| Horsepower (HP) | Torque (Nm) | |
|---|---|---|
| Standard | 390 | 500 |
| Stage 1 | 417 | 532 |
| Stage 2 | 430 | 548 |
- Make
- Infiniti
- Model
- FX
- Generation
- 2008-2013
- Engine
- 5.0 V8 390hp
- Fuel type
- Petrol
Frequently asked questions
Is Stage 1 tuning safe for the Infiniti FX 2008-2013 5.0 V8 390hp?
Yes — Stage 1 for this engine is a software-only remap calibrated to stay within its stock mechanical limits (turbo, clutch, fueling), so no hardware changes are required.
How much more power does the 5.0 V8 390hp make after tuning?
Standard output is 390 HP / 500 Nm; Stage 1 on this engine typically reaches 417 HP / 532 Nm. Exact results can vary slightly with fuel quality and vehicle condition.
How long does a Infiniti FX 2008-2013 5.0 V8 390hp remap take?
Once your original file is uploaded through the member panel, most requests for this engine are completed within a few hours.
Can the 5.0 V8 390hp be reverted to its original file?
Yes — we keep the original file on record for the request, so the ECU can be put back to stock at any time.