2021–2025 Audi Q5 45 TFSI Stage 2+ ECU Tune (E85 • Hybrid EA888 2.0T • B9.5)
Boost Dynamic Tuning • E85 Required • OBDII Remote Flash

Unleash the Full Potential of Your 2021–2025 Audi Q5 45 TFSI (B9.5)

Exclusively Tuned by Boost Dynamic Tuning — The Only USA-Based Solution

If you own a 2021+ Audi Q5 with the hybrid 2.0T, you’re holding untapped power — and we’re the only ones in the U.S. who know how to unlock it. At Boost Dynamic Tuning, we don’t follow the crowd — we lead it. Our Stage 2+ ECU calibration is designed specifically for this platform, and no one else in the country offers what we do.

With over 11 years of experience and in-house calibration expertise, we don’t rely on “theoretical gains.” Every tune we offer is backed by real-world testing and before-and-after dyno results — no smoke, no mirrors, no fuel additives. Just raw, authentic power.

Why Choose BDT?

• Exclusivity: The only tuner in the U.S. offering a tested and proven solution for the B9.5 hybrid platform.
• Authenticity: All of our files are built and refined in-house — no resellers, no copy/paste maps.
• Transparency: What you see is what you get — every claim backed by dyno data.
• Remote Convenience: Flash from home via OBDII port — no shop visit required.

This isn’t just tuning — it’s engineering with passion, built for those who demand more from their car.

Fitment & Compatibility

• Models: Audi Q5 45 TFSI
• Years: 2021, 2022, 2023, 2024, 2025
• Chassis / Engine: B9.5 Hybrid EA888 Gen 3 2.0T
• Fuel: E85 REQUIRED (ethanol content must be consistent)
• Tuning Method: OBDII Remote Flash (At-Home)
• TCU Tune: Not available at this time

CUSTOMER REVIEWS LIVE CALL!

BDT Stage 2+ Highlights

Unleash Up to 350 WHP / 390 WTQ on E85

• Optimized boost and torque delivery
• Intake Air Temp Safety alert (dash warning when pushing too hard)
• Speed limiter removed
• Torque limiters raised
• Raised rev limiter (Neutral/Park)
• Load limits raised
• Auto Start/Stop defaults OFF (still functional)
• Crackle/Overrun in Dynamic mode only
• Calibrated stock boost gauge for higher readings
• Sharper throttle response & reduced turbo lag
• Increased LPFP & HPFP pressure strategies for ethanol fueling
• VVT recalibration
• Flashable via OBDII — no physical ECU mods required

Built for the Streets. Proven on the Dyno.

Stage 2+ is the top-tier street calibration for the Q5 hybrid EA888 platform. It’s built around ethanol’s cooling and octane advantage to deliver a massive jump in torque and a stronger pull through the entire RPM range — while keeping Audi-level smoothness.

Stop leaving power on the table. Elevate your driving experience with BDT’s Stage 2+ tune — crafted exclusively for your 2021–2025 B9.5 Audi Q5 45 TFSI.

Crackle Pops (Overrun Feature)

Bring your Audi to life with our overrun/crackle calibration — a crowd-favorite feature that adds drama and personality to every drive.

When decelerating from higher RPMs or free-revving in Neutral/Park, you’ll hear sharp, exhilarating pops and crackles from your exhaust. It’s a controlled and safe enhancement designed to deliver an aggressive sound profile — especially when paired with an aftermarket exhaust.

Note: Effect may be more subtle on stock exhaust systems. We also implemented a safety to reduce crackles if exhaust temperatures get too high.

⚡ Boost Control Optimization

From the factory, the stock ECU delivers a rough and inconsistent boost curve — often causing delayed throttle response and a lack of urgency during high-load pulls.

With BDT’s Stage 2+ ECU Calibration, we refine boost control strategy to deliver:

• Smoother, more linear boost delivery
• Sharper throttle response
• Consistent power across the entire powerband

Whether you're launching from a dig or pulling through gears, you get immediate, predictable power that keeps you planted and fully engaged.

Feel the difference: smoother transitions, no hesitation, just pure acceleration.

Remote Tuning How-To

POWER GAINS

ECU TUNE MODIFICATION REQUIREMENTS

SOFTWARE INSTALLATION REQUIREMENTS

Maintenance Schedule (Required for Tuned Vehicles)

IF YOU WANT YOUR CAR TO SURVIVE, THESE MUST BE DONE!

E85 + Stage 2+ load means maintenance is non-negotiable. If you can’t afford the maintenance, please don’t tune the car.

FAQ

• What fuel is required?
  E85 is REQUIRED for Stage 2+. Do not run pump gas on this file.
• Do I need hardware?
  Yes — a high-flow exhaust and E85 are required. Intake, intercooler, and drivetrain inserts are recommended for best results.
• Is a downpipe required?
  No — downpipes are not compatible on this hybrid platform.
• Can I flash at home?
  Yes. The tune is OBDII flashable with remote support included.
• Is a TCU tune available?
  Not currently for this model.

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.

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