2002–2005 Audi A4 1.8T Stage 1 ECU Tune (B6)

Your B6 Isn’t Slow… It’s Just Choked From the Factory ?

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BDT STAGE 1 TUNE FEATURES

• Massive horsepower & torque gains without sacrificing drivability
• Speed limiter removed & torque limiters raised
• Fueling requested optimized by throttle position
• Boost control refined for smooth, linear onset (no factory “wobble”)
• Turbo lag reduced / faster spool & sharper throttle response
• LPFP/HPFP targets increased safely (build-dependent)
• Variable Valve Timing recalibration for stronger midrange
• OBDII flash at home — no shop, no downtime
• Award-Winning 2-Step + No-Lift-Shift (NLS) for manuals
• Optional overrun crackles & pops
• MAF-less tuning available (build-dependent)
• Immobilizer delete available for ECU swap setups

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2002–2005 Audi A4 B6 1.8T — STAGE 1

Stage 1 is where the B6 finally wakes up. You’ll feel it instantly: torque comes in sooner, boost hits harder, and the car pulls clean all the way out.

On 93 octane with a healthy setup, you’re looking at up to: ~280 HP / ~287 TQ (crank) aka +100 HP / +110 TQ over stock. This is the power your A4 was robbed of at birth.

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AWARD-WINNING 2-STEP LAUNCH CONTROL

34+ event wins don’t happen by accident. Our 2-Step is real anti-lag energy — loud, crisp, and violent in the best way.

CRACKLE POPS / OVERRUN (OPTIONAL)

Lift off at high RPM and the tune gives you that spicy decel chatter. Stock exhaust = subtle. High-flow/downpipe = straight menace.

BOOST CONTROL DIALED

We smooth the factory boost curve so your turbo doesn’t feel lazy or inconsistent. Result: clean surge, smooth power, and instant response when you roll into it.

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POWER GAINS

Power varies with fuel quality, altitude, maintenance, and supporting mods.

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ECU TUNE MODIFICATION REQUIREMENTS

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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.

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 the CARB, and is therefore not legal for sale or use in California or any CARB-aligned state.

The EPA has enforcement authority to pursue manufacturers, sellers, installers, and end-users of defeat devices.

Assumption of Risk & Waiver of Liability

• Assume all risk and responsibility for compliance with local, state, and federal laws.
• Waive all claims against Boost Dynamic Tuning, LLC arising from unlawful use.
• Release Boost Dynamic Tuning, LLC from damages, injuries, or penalties resulting from improper or unlawful use.

⚖️ Indemnification Clause

You agree to indemnify, defend, and hold harmless Boost Dynamic Tuning, LLC from any fines, penalties, damages, losses, or legal fees resulting from misuse, misrepresentation, or violation of emissions laws.

Final Notice

Sold “as is” and “with all faults,” with no warranties regarding legality for highway use or emissions compliance. End-user is responsible for determining legality. BDT does not condone illegal street use or emissions tampering.

DOWNPIPE NOTICE: By purchasing a motorsport/racing product, you acknowledge it is not designed to meet emissions standards (including CARB) and may be illegal in certain jurisdictions. You are responsible for understanding applicable laws.