BDT Stage 2 ECU Tune

2015–2021 Audi A3 (8V • EA888 Gen 3 • IS20)

Your A3 already delivers that clean Audi balance of comfort and punch — but from the factory it’s still holding back. BDT Stage 2 unlocks what your 8V A3 was meant to feel like: sharper throttle, much harder mid-range pull, and power that stays smooth all the way to redline. The result is a car that feels lighter, quicker everywhere, and way more fun every time you roll into boost.

Fitment & Compatibility

Unlock the Full Potential of Your Audi A3 (8V)

Exclusively Tuned by Boost Dynamic Tuning — Built by Enthusiasts, for Enthusiasts

If you own an A3, you didn’t buy it to feel “almost quick.” You bought it because it’s the perfect daily that can still surprise people. At Boost Dynamic Tuning, we don’t do generic flashes. We write in-house Stage 2 calibrations that bring your EA888 Gen 3 to life using real data, real testing, and refinement you’ll notice instantly.

With 11+ years of hands-on tuning experience, dyno-verified development, and street/track validation, our Stage 2 ECU Tune transforms your A3 into a confident daily weapon — smooth when you want it, savage when you don’t. No gimmicks. No mystery additives. Just fast, reliable, repeatable performance.

Why Choose BDT?

• Audi/VAG-Specific Tuning Expertise: Purpose-built for the EA888 Gen 3 IS20 platform using OEM-level tools and real-world refinement.
• Authenticity Over Hype: Every file written in-house — no resellers, no copy/paste calibrations.
• Remote Flashing: Flash your A3 via OBDII at home. No ECU shipping. No shop scheduling.
• Dyno-Tested & Street-Proven: Backed by data and validated under real load, not theory.

BDT Stage 2 ECU Tune — Audi A3 (8V) Highlights:

• Multi-Map Switching (5 maps) — on-the-fly via cruise controls
• Rolling Anti-Lag (RAL) — build boost while moving (track/off-road)
• 2-Step (Manual only) • Boosted Launch (DSG) with BDT TCU logic
• Intake Air Temp Safeties to protect your engine
• EGT Safety Logic to protect the engine/turbo
• Speed Limiter Removed • Neutral/Park Rev Limit Raised
• Auto Start/Stop Defaults Off (feature remains functional)
• Torque Limiters Raised
• Fuel/Torque Request Optimized by load & throttle
• Stock Boost Gauge Re-scaled to display higher boost
• Overrun / Crackle Pops in Dynamic or per-map control (optional)
• Refined Boost Control — linear onset, smoother long-pull stability
• Reduced Turbo Lag
• LPFP/HPFP Targets Optimized
• VVT Optimization
• OBDII Port Flashing — quick install at home or in-shop

Crackle Pops — The Overrun You’ve Been Waiting For

Add real auditory character to your A3 with our overrun/crackle feature — perfect for owners who want that aggressive, head-turning sound on decel or quick revs in Neutral. Subtle on stock exhaust, rowdy with a downpipe or full system.

• Selectable Low / Medium / Intense levels
• RPM-dependent windows (Dynamic mode / per map)
• Safety reduction if exhaust temps climb too high

⚙️ Boost Control Recalibrated

The factory A3 boost curve can feel conservative and uneven. BDT rewrites the boost logic to deliver smoother power everywhere:

• Smoother, more linear boost ramp
• Instant throttle engagement
• Consistent power delivery through every gear

This isn’t just tuning — it’s precision-built calibration that transforms the way your A3 drives.

BDT MULTI-MAP SWITCHING + RAL LIVE

POWER GAINS

Expected gains on 93 octane with required downpipe: up to 315 WHP / 365 WTQ (approx. 362 HP / 420 TQ at the crank).

Results vary by dyno type, fuel quality, altitude, and supporting hardware. BDT publishes live before/after runs for transparency.

ECU TUNE MODIFICATION REQUIREMENTS

Multi-Map Layout

• Map 1: Daily (low boost), RAL ON, 2-Step ON, Pops OFF
• Map 2: Daily (standard), RAL ON, 2-Step ON, Pops OFF
• Map 3: Race — NORMAL TIMING, RAL ON, 2-Step ON, Pops ON
• Map 4: RACE — HIGH BOOST, HIGH TIMING, RAL ON, 2-Step ON, Pops ON, 100 OCTANE REQUIRED
• Map 5: Valet — RAL OFF, 2-Step OFF, Pops OFF

Frequently Asked Questions

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

I WANT YOUR CAR TO SURVIVE MULTIPLE YEARS TO COME WITH MY TUNE. I DON'T JUST RECOMMEND THESE FOR FUN. I HAVE TUNED COUNTLESS AUDI 8V CARS AND THIS IS WHAT I'VE EXPERIENCED THROUGH THE YEARS. IF YOU CAN'T AFFORD THE PARTS, PLEASE DON'T TUNE YOUR CAR. NOT BEING HARSH, BEING STRAIGHT FORWARD SO YOU DON'T BLAME MY TUNE THAT ARE ON COUNTLESS CARS WITHOUT ISSUES BECAUSE THEY FOLLOW MY MAINTENANCE GUIDE.

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-adopting 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 local, state, and federal laws and regulations.
2. 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.
3. 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.