SKU: POR.955T.ET
Porsche 955 Cayenne Turbo / Turbo S XperTune Performance Software (2003-2007)
Unlock more power from your Porsche Cayenne Twin Turbo 4.5L V8 with Fabspeed XperTune handheld performance software. Fits all 955 Cayenne Turbo and Turbo S models from 2003-2007. Delivers dyno-proven gains in horsepower and torque while maintaining daily driveability and engine reliability through OBD-II flashing.
Key Features
- Handheld OBD-II Tuner: Connects directly to your vehicle’s port and computer, no ECU removal or bench flashing required
- Power Gains: Turbo model from 450 HP/460 TQ stock to 506 HP/521 TQ tuned. Turbo S from 520 HP/530 TQ to 577 HP/589 TQ
- Custom Tuning: Send stock data via email to [email protected] for a vehicle-specific tune returned in 1-2 business days
- Reversible Tune: Flash back to stock anytime using the handheld device, no permanent changes
- Driveability Focus: Adjusts sensor inputs, air/fuel ratios, and boost for responsive throttle and smooth power delivery
Product Notes
- Requires Windows PC for data upload and tune application. Mac not supported
- Handheld device pairs exclusively to one vehicle
- Include ECU Tuning Information form with your vehicle mods for best results
Installation Notes
- Professional installation recommended.
- Follow 5-step process: read stock file, email data, receive custom tune, write to handheld, flash vehicle
- No special tools needed beyond OBD-II access and Windows computer
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2003-2007 | Porsche | Cayenne | Turbo 4.5L V8 |
| 2006-2007 | Porsche | Cayenne | Turbo S 4.5L V8 |
Why Choose Fabspeed?
- Decades of Porsche motorsport tuning experience
- Dyno-tested results with real-world reliability
- Precision-engineered software for exact fit and performance
Frequently Asked Questions
- Q: Which Porsche Cayenne models does this fit?
A: All 2003-2007 955 Cayenne Turbo and 2006-2007 Turbo S with 4.5L V8 twin-turbo engines - Q: Do I need to mail my ECU?
A: No, the handheld tuner flashes via OBD-II port. read stock data, email it, get custom tune back - Q: Can I return to stock power?
A: Yes, use the handheld to reflash original software anytime without restrictions
Shipping & Handling
- Method: UPS Ground or FedEx
- Availability: In stock – ships same or next business day
- Packaging: Compact box 8 x 6 x 3 inches
- Weight: 1 lb





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