Unleash the Beast — Stage 2 Tune for Your 2009–2015 Audi A4/A5 2.0T (B8/B8.5)

Exclusively Tuned by Boost Dynamic Tuning — Aggression with Refinement

Stage 1 was just the warm-up. Stage 2 is where your 2.0T steps into the big leagues. With a high-flow downpipe and our in-house Stage 2 ECU calibration, you’ll experience explosive power, sharper response, and a soundtrack that leaves no doubt — your Audi means business.

We don’t copy, paste, or guess. Every file is crafted in-house, backed by over 11 years of real-world tuning experience and proven with before-and-after dyno data. This isn’t just about making numbers — it’s about delivering consistent, repeatable power with the reliability your daily driver demands.

Why Choose BDT Stage 2?

• Proven Gains: Up to 300 HP / 360 TQ on pump gas

• Built In-House: No generic off-the-shelf files

• Track-Ready Performance: Instant throttle, reduced lag, and maximum torque throughout the rev range

• Remote Convenience: Flash from home via OBDII — no shop visit needed

• Passion & Precision: Engineered by enthusiasts, tested by drivers

BDT Stage 2 Highlights

• Optimized Boost & Torque Delivery

• Speed Limiter Removed

• Torque Limiters Raised

• Neutral/Park Rev Limiter Raised (TCU Tune Required)

• Increased LPFP & HPFP Pressure

• Sharper Throttle Response & Reduced Turbo Lag

• Overrun/Crackle in Dynamic Mode

• Linear, Predictable Powerband

• Flashable via OBDII — No Physical Shop Visit Required

Crackle Pops (Overrun Feature)

Stage 2 turns up the volume. During deceleration from high RPM or free-revving in Neutral/Park, you’ll get aggressive, controlled pops and crackles from your exhaust/downpipe. With an aftermarket system, it’s pure motorsport theater — without sacrificing safety or drivability.

Boost Control Optimization

From the factory, boost delivery is inconsistent.
BDT’s Stage 2 calibration completely overhauls the strategy to deliver:

• Faster turbo spool

• Smoother, more linear boost curve

• Predictable power across the entire powerband

Every gear, every pull — you get instant, confident acceleration.

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POWER GAINS

ECU TUNE MODIFICATION REQUIREMENTS

SOFTWARE INSTALLATION REQUIREMENTS

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 Environmental Protection Agency (EPA) or the California Air Resources Board (CARB), and is therefore not legal for sale or use in California or any state that follows CARB standards.

Assumption of Risk and Waiver of Liability

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

Assume all risk and responsibility for compliance with applicable local, state, and federal laws and regulations.

Waive all claims, liabilities, and legal actions against Boost Dynamic Tuning, LLC, its officers, directors, employees, and affiliates arising from the purchase, installation, or use of this product in violation of any applicable law.

Release Boost Dynamic Tuning, LLC from any and all damages, injuries, or penalties resulting from improper or unlawful 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 any emissions laws or regulations

Final Notice

This product is sold “as is” and “with all faults”, with no warranties, expressed or implied, regarding legality for public 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.

 **  PLEASE NOTE, IF YOU SCHEDULE AN APPOINTMENT WITH US TO FLASH YOUR TUNE, AND YOU ARE LATE WITH NO CONTACT, THERE WILL BE A $50 LATE FEE APPLIED. IF YOU NEED TO RESCHEDULE YOUR TUNE, YOU MUST CONTACT US AT LEAST AN HOUR BEFORE YOUR APPOINTMENT, OR THERE WILL BE A $50 FEE APPLIED. **

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, WHETHER IN THE USA OR OTHERWISE, THE PRODUCT IS NOT C.A.R.B. COMPLIANT, AND THAT THE PRODUCT IS NOT FOR SALE OR USE IN CALIFORNIA, USA NOR ANY OTHER JURISDICTION WHERE THE SALE OR USE IS PROHIBITED BY LAW. BOOST DYNAMIC TUNING, LLC MAKES NO REPRESENTATIONS, WARRANTIES, OR CLAIMS THAT THIS PRODUCT COMPLIES WITH ANY APPLICABLE EMISSIONS LAWS AND EXPRESSLY DISCLAIMS ANY AND ALL SUCH REPRESENTATIONS, WARRANTIES, AND CLAIMS, WHETHER EXPRESS OR IMPLIED. BY PURCHASING THIS PRODUCT, YOU REPRESENT, WARRANT, AND AGREE THAT IT IS YOUR RESPONSIBILITY TO INFORM YOURSELF OF ANY LAWS OR REGULATIONS THAT MAY APPLY TO YOUR PURCHASE AND/OR USE OF THE PRODUCT.