2010 - 2016 Audi S4/S5 3.0t Stage 3 (Remote Tune)

Unlock the True Potential of Your B8/B8.5 S4/S5 — STAGE 3

Elevate your driving experience to the absolute limit of the factory supercharger platform. Boost Dynamic Tuning (BDT) Stage 3 ECU Calibration is engineered for enthusiasts demanding maximum real-world performance — not inflated marketing numbers. Our results are validated through live, transparent before-and-after dyno testing with no fuel additives and no tricks.

Why BDT Stage 3?

While others advertise theoretical crank numbers, BDT focuses on measurable wheel horsepower. Our Stage 3 calibration consistently outperforms comparable off-the-shelf files while maintaining factory-level drivability, safety strategies, and long-term reliability.

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BDT STAGE 3 TUNE FEATURES

- Maximum Horsepower & Torque from the Factory Supercharger

- Rev Limit Increased to 7200 RPM

- Speed Limiter Removed

- Neutral / Park Rev Limiter Raised

- Torque Model Fully Recalibrated

- Advanced Dual Pulley Boost Control Strategy

- Linear, Sustained Boost Across the Entire Powerband

- Reduced Supercharger Lag

- Enhanced Thermal Management Logic

- Low & High Pressure Fuel System Optimization

- Ethanol Blending Support (E40)

- Variable Valve Timing Recalibration

- Overrun / Crackle (Dynamic Mode)

- OBDII Port Flashing

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B8/B8.5 S4/S5 3.0T — STAGE 3 ECU TUNE

BDT Stage 3 delivers the absolute ceiling of performance from Audi’s legendary 3.0T platform. Expect relentless acceleration, sustained top-end power, and torque delivery that transforms the car into a true highway predator. This is the calibration designed to dominate competitors running similar hardware — and then some.

POWER GAINS

STAGE 3 REQUIRED MODIFICATIONS

EMISSIONS COMPLIANCE NOTICE & LEGAL DISCLAIMER

FOR COMPETITION USE ONLY — NOT FOR STREET USE

This product is sold and intended solely for vehicles used in closed-course racing, off-road competition, or organized motorsport events. It is not legal for use on any pollution-controlled vehicle operated on public roads or highways, as defined under the Clean Air Act (42 U.S.C. § 7522) and applicable state emissions laws.

By purchasing, installing, or using this product, you explicitly acknowledge and agree to the following terms:

Federal and State Emissions Compliance

• This product may modify, bypass, defeat, or render inoperative one or more emissions control devices, including but not limited to: catalytic converters, oxygen sensors, EGR systems, or OBD monitoring systems.
• The installation or use of this product on any vehicle subject to emissions regulations is strictly prohibited by federal law and may result in civil or criminal penalties, including fines up to $45,000 per vehicle under the Clean Air Act.
• This product is not certified by the EPA or CARB, and is therefore not legal for sale or use in California or any CARB-aligned state.

Assumption of Risk and Waiver of Liability

By purchasing and/or installing this product, you agree to:

1. Assume all risk and responsibility for compliance with applicable emissions laws.
2. Waive all claims, liabilities, and legal actions against Boost Dynamic Tuning, LLC and affiliates arising from unlawful use.
3. Release Boost Dynamic Tuning, LLC from any damages or penalties resulting from improper or illegal use.

⚖️ Indemnification Clause

You further agree to indemnify, defend, and hold harmless Boost Dynamic Tuning, LLC from any fines, penalties, damages, losses, or legal fees resulting from:

• Use of this product in a manner inconsistent with this disclaimer
• Misrepresentation of vehicle use
• Violation of emissions laws or regulations

Final Notice

This product is sold “as is” and “with all faults”, with no warranties regarding legality for highway use or emissions compliance.

It is the sole responsibility of the end-user to determine the legality of this product for the intended application. Boost Dynamic Tuning, LLC does not condone or recommend illegal street use or emissions equipment tampering.

By completing your purchase, you acknowledge that you have read, understood, and agreed to this disclaimer in full.

DOWNPIPE NOTICE: BY PURCHASING A MOTORSPORT/RACING PRODUCT ("PRODUCT"), YOU REPRESENT THAT YOU UNDERSTAND AND AGREE THAT: THE PRODUCT IS NOT DESIGNED TO MEET ANY APPLICABLE EMISSIONS STANDARDS, THE PRODUCT IS NOT C.A.R.B. COMPLIANT, AND IS NOT FOR SALE OR USE IN CALIFORNIA OR ANY JURISDICTION WHERE PROHIBITED BY LAW. BOOST DYNAMIC TUNING, LLC DISCLAIMS ANY CLAIMS OF EMISSIONS COMPLIANCE. BY PURCHASING, YOU AGREE IT IS YOUR RESPONSIBILITY TO INFORM YOURSELF OF ALL APPLICABLE LAWS.