WARNING: This product can expose you to chemicals that are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information, visit www.P65warnings.ca.gov.Don't have an Ultralink cable? Purchase one here and start your tuning journey today!
Revolutionize the way you tune your vehicle with Ultralink, the cutting-edge device that puts the power of APR Engine Control Unit (ECU) and Transmission Control Unit (TCU) Upgrades right at your fingertips, all from the comfort of your own home. Say goodbye to the hassle of dealer visits and complicated installations. With Ultralink, tuning your car has never been easier or more convenient.
We're thrilled to introduce APR's Engine Control Unit (ECU) Upgrades for the powerful 4.0 TFSI EA825 engine found in the Audi RS6 and RS7 Performance! With up to 795 HP and 864 FT-LBS of torque, this upgrade transforms your car into a performance powerhouse, delivering exhilarating power and unmatched driving excitement.
Power. Precision. Protection.
Our new ECU software is the result of months of meticulous engineering and real-world testing, far surpassing the typical aftermarket solution. By equipping our development vehicles with high-speed data loggers, turbo shaft speed sensors, thermocouples, and other precision instruments, we fine-tuned hundreds of parameters and corrected countless protection models across multiple octanes to achieve flawless performance, enhanced safety, and unmatched reliability. We're so confident in its reliability that we even offer an optional factory term-limit matching limited powertrain warranty with APR Plus!
What does that mean for you?
It means blistering acceleration with gains of up to +189 AWHP and +220 AWFT-LBS over stock with just tuning alone, delivering a rush of power that transforms your driving experience. We recorded 2.x-second 0-60 mph sprints that will drop your stomach and pin your back to your seat like never before! You'll enjoy smooth, linear throttle response and a torque curve that feels endless, providing relentless pull across the rev range. Race-proven features like brake boosting and speed limiter removal unlock new levels of control-perfect for track days or spirited driving. All of this is backed by advanced safety routines that ensure your engine remains protected, even under the most demanding conditions.
Performance without compromise
Our ECU upgrade includes advanced safety features that go above and beyond by correcting modeled sensor data within the ECU and enabling and calibrating new protection routines. We've optimized turbocharger protection by monitoring shaft speed and respecting overspinning limits, excessive exhaust backpressure, and unstable pressure ratios. Low-speed pre-ignition (LSPI) protection prevents engine damage in high gears. Thermal management actively reduces power to prevent overheating of critical components, lowers cooling setpoints in sport mode, and reduces power until your oil reaches the proper temperature. Fuel system optimization ensures safe, reliable operation within critical fueling limits. Additionally, drivetrain shock protection optimizes torque delivery to reduce stress on critical components. The result? Massive power gains with the confidence that your engine and drivetrain are protected for the long haul.
Enhanced Driving Experience
We didn't stop at raw power-APR's ECU upgrade enhances every aspect of your driving experience. To truly experience the sound of this engine, we've increased the standing RPM limiter, allowing higher revving in neutral and park while enabling the exhaust crackle in this mode. Optionally, you can enable even louder exhaust sounds with more aggressive burbles, pops, and bangs in all scenarios-or keep it stock for a more refined experience.
Furthermore, we've added left-foot braking and brake boosting for greater control on and off the track, while the speed limiter removal unleashes your car's full top-speed potential. The Auto Start/Stop memory ensures your preferred setting is always ready, putting you in control every time you start the car, and it disables automatically in sport mode. Finally, we've removed the cap on the boost gauges so you can see the full range present at higher power levels!
Features:
- Power Gains: Up to 795 HP / 864 FT-LBS (+189 AWHP / +220 AWFT-LBS)
- Includes 5 Fuel Grade Tunes: 91 AKI (95 RON), 93 AKI (98 RON), 100 AKI (104 RON), 104 AKI (108 RON), and E60-E85 (no hardware required)
- APR Plus: 91 AKI upgrade with an optional factory-matching limited powertrain warranty
- Enhanced Features: Optional louder exhaust crackle, increased standing RPM limiter with exhaust crackle enabled, speed limiter removal, Auto Start/Stop memory, left-foot brake boosting, linear throttle mapping, and uncapped boost gauge
- Advanced Safety Protection Routines: LSPI/knock protection, thermal management, turbo/pressure quotients, torque/driveline shock protection, and fuel system protection
- No ECU Removal: Our software installs directly to your factory ECU through the OBDII port, can be easily removed to return to the stock tune, and resets the flash counter for unlimited flashes
- Supports Bolt-On Mods: Adding most hardware upgrades increases power without requiring a reflash or additional stages
- No TCU Required: Full torque is unlocked without requiring a TCU upgrade
- Lifetime Updates: Continuous improvements and support
- 30-Day Money-Back Guarantee
| Stage | HP | TQ | Max Gain | Max Gain |
|---|
| Stock As Reported by OEM | 621 HP | 627 FT-LBS | ||
| Stock As Measured by APR | 621 HP | 652 FT-LBS |
| APR Plus |
|---|
| 91 AKI / 95 RON | 724 HP | 783 FT-LBS | +124 AWHP | +142 AWFT-LBS |
| Stage 1 |
|---|
| 91 AKI / 95 RON | 724 HP | 783 FT-LBS | +124 AWHP | +142 AWFT-LBS |
| 93 AKI / 98 RON | 745 HP | 804 FT-LBS | +140 AWHP | +160 AWFT -LBS |
| 100 AKI / 104 RON | 763 HP | 839 FT-LBS | +168 AWHP | +195 AWFT -LBS |
| 104 AKI / 108 RON | 778 HP | 864 FT-LBS | +189 AWHP | +220 AWFT -LBS |
| E60-E85 Ethanol | 795 HP | 805 FT-LBS | +175 AWHP | +165 AWFT -LBS |
Warning: 2024+ model year vehicles use the latest version of SFD, requiring a factory ODIS tool to unlock the ECU during each flash. Use only fuel equal to or higher than specified-never lower. Follow our fuel guide, particularly for race fuel and Ethanol. Dyno results are for reference only and will vary due to vehicle condition, setup, dyno type, environmental factors, and fuel quality. North America uses the Anti-Knock Index (AKI) (RON+MON)/2, while the Rest of the World (ROW) uses RON. Each vehicle's year, make, and model may have multiple engine or transmission controller software part numbers ("box codes") with unique revisions. Manufacturers release updates that alter these codes, which can only be verified by scanning the controller. Some stages, octane levels, or features may not be available for specific box codes. Our website provides a general guide by Year, Make, and Model, but you can request unavailable software. A 30-day money-back guarantee applies if you're not satisfied.
