CT Tuning ECU Flash Audi RS4 4.2 FSI V8 420hp B7 2004-2008
$900.00
- Description
- Additional information
Description
Take your Audi RS4 B7 4.2L FSI V8 420hp 2004-2008 to the next level with a precision-engineered CT Tuning ECU Flash. This custom software upgrade optimizes the 4.2L V8 engine to provide sharper throttle response and increased power throughout the entire RPM range for a more aggressive, responsive drive.
Crank Horsepower Ratings
- Stock Power: 420hp | 303ft/lbs
- Tuned Power: 462hp | 353ft/lbs
ECU Flash Options
- Vmax Off: Removes factory top speed limiter
- Race Exhaust: Optimized for full race exhaust hardware
- Pops & Bangs: Requires full race exhaust system
- Cold Start Off: Deactivates cold start system
Why Choose CT Tuning
- Priority customer service
- Global tuning expertise and environmental optimization
- Revert to factory settings at any time
- Compatible with standard bolt-on performance parts
- Dynamic ECU adjustment for higher octane fuels
- Safe, reliable, and track-proven software
How to Flash Your ECU
- Self-flash using our OBDII device and a Windows PC
- Schedule an appointment at our Arizona tuning center for installation
ECU Reference
- Hardware typically identified as Bosch MED9.1 or MED9.1.x
Vehicle Fitment
- Audi RS4 B7 4.2L FSI V8 2004-2008
Product Notes:
- Power ratings are converted from PS/NM and may vary slightly from advertised figures.
- Tuning must be used within 6 months of purchase.
- Support is available for 30 days after file delivery.
- Future modifications if supported or OEM software updates require a $350 file service fee.
- No refunds once software is issued or locked to a vehicle.
- Emissions readiness is not forced; original files are provided for return to stock.
Additional information
| Weight | 5 lbs |
|---|---|
| Dimensions | 13.25 × 11.5 × 2.38 in |
| Make | Audi |
| Model | RS4 |
| Product Year | 2006, 2007, 2008 |
CT Tuning software is purchased with the intention of using these products for Racing Competition Only. As the authorized purchasing party, you understand that some or all of these parts may not comply with Federal, State, Province, and/or Local laws, ordinances, and regulations. As the buyer, you take responsibility to ensure that any modifications or upgrades that have been done to your vehicle conform to all applicable laws and regulations for road use, especially pertaining to safety and emissions. To make a purchase, you will be required to sign a waiver acknowledging that these products are intended for Racing Competition Only and not meant to be used on a road car.