FRONT WHEEL DRIVE 2017 - 2020 Audi A4 B9 A4 A5 2.0t Ecu tune Remote
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FRONT WHEEL DRIVE 2017 - 2020 Audi A4 B9 A4 A5 2.0t Ecu tune Remote

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Description
BOOST DYNAMIC TUNING

B9 Audi A4 / A5 2.0T FWD ECU Tuning

2017–2020 • EA888 Gen 3 • IS20 • Front-Wheel Drive

The B9 FWD 2.0T Responds Like Nothing Else on This Platform.

The B9 A4/A5 2.0T FWD is one of the best-responding EA888 setups we've ever calibrated. Factory softness becomes strong midrange torque, clean throttle response, and refined pull-through power — whether you're on stock hardware or fully bolted up.

Every calibration is built from scratch in-house and validated through real-world logging and dyno testing. No recycled files. No "close enough." 11+ years of calibration experience. Built for drivers who demand more from their Audi.

Fitment Choose Your Stage Full Comparison How It Works Deep-Dive Videos Maintenance FAQ
Multi Level Crackle Pop FWD-Optimized Torque 2 Stage Options Remote OBDII Flashing
Audi A4 A5 B9 FWD ECU Tuning BDT
B9 A4 / A5 FWD — ALL STAGES
From ~324 HP to ~362 HP. Pick your level.
 
 

Fitment & Compatibility

Applies to all stages below. FWD models only.

 

Vehicle: 2017–2020 Audi A4 / A5 2.0T TFSI (B9 / B9.5)

Engine: EA888 Gen 3 2.0T

  • Models: Audi A4 2.0T TFSI / Audi A5 2.0T TFSI
  • Years: 2017, 2018, 2019, 2020
  • Chassis: B9 / B9.5
  • Turbo: Factory IS20
  • Drivetrain: Front-Wheel Drive (FWD) ONLY
  • Transmission: Automatic / DSG
  • Tuning Method: Remote OBDII Flash at Home
  • Fuel: 91/93 Octane (stage-dependent)
 

Supported ECU Box Codes:

Contact BDT with your ECU box code to confirm compatibility before purchase.

Don't see your box code listed? Reach out — we may already support it or can add it.

Why Choose BDT?

  • Authenticity: 100% in-house development — no resellers, no copy/paste maps.
  • FWD-Specific Calibration: Torque management built specifically for front-wheel drive traction characteristics.
  • Transparency: Dyno-backed results and real-world testing.
  • Remote Convenience: Flash from home via OBDII — no shop visit required.
  • OEM+ Drivability: Refined power delivery that stays smooth enough to daily.

This isn't just tuning — it's engineering with passion, built for drivers who demand more from their Audi.

Choose Your Stage

Two calibrations. One platform. Pick the level that matches your goals and hardware.

Stage 1

~324 HP
~414 TQ
91/93 OCTANE
 
Hardware Required: None
Recommended: Intercooler, intake

Stage 2

~362 HP
~442 TQ
93 OCTANE
 
Hardware Required: High-Flow Exhaust
Recommended: Intercooler, intake, TCU tune, drivetrain inserts

Full Stage Comparison

  Stage 1 Stage 2
Fuel 91/93 Octane 93 Octane
Horsepower ~324 HP ~362 HP
Torque ~414 TQ ~442 TQ
High-Flow Exhaust — Required
Intercooler Recommended Strongly Recommended
Air Intake Recommended Recommended
TCU / DSG Tune — Highly Recommended
Drivetrain Inserts — Recommended
Crackles Dynamic/Sport mode only (all stages) — Low, Medium, Intense

Final output varies with fuel quality, altitude, temperature, and vehicle health. On FWD cars, traction becomes the limiter sooner — tire quality and road conditions matter.

Included in Every Stage

  • Increased Horsepower & Torque Gains
  • FWD-Optimized Torque Management for smooth traction
  • Speed Limiter Removed
  • Torque Limiters Raised • Load Limits Raised
  • Raised Rev Limiter (Neutral/Park)
  • Auto Start/Stop Defaults Off (still functional)
  • Crackle / Overrun (Dynamic/Sport mode only)
  • Calibrated Stock Boost Gauge for higher readings
  • Sharper Throttle Response • Reduced Turbo Lag
  • Increased LPFP & HPFP Pressure
  • VVT Recalibration
  • Engine VE Remapped for a smooth power curve
  • OBDII Port Flashing — no physical ECU mods

How Remote Tuning Works — Flash From Home in Minutes

No shop. No tow truck. No downtime. Your entire ECU calibration is completed from your driveway — BDT logs into your laptop remotely and handles every button press.

 

What You'll Need

  • Windows laptop — macOS / Apple not supported
  • 50+ Mbps internet connection (stable, no hotspot)
  • 8GB RAM minimum
  • BDT remote tuning cable (included with purchase)
  • Battery charger — 10–25 amp, connected during the entire flash
  • TeamViewer Quick Support — free, BDT walks you through it

Step-by-Step

  1. 1

    Schedule: Scan the QR code included with your cable to book your session on BDT's scheduling page.

  2. 2

    Download TeamViewer Quick Support: Google "TeamViewer" → click Quick Support → download and install. This gives BDT secure remote access to your laptop — no IT experience needed.

  3. 3

    Connect battery charger: Hook up positive terminal first, negative last. Set to 10–25 amps and leave it connected the entire session.

  4. 4

    Key on, engine off (accessory mode): Press the start button with no foot on the brake. All dash lights on — engine does not start.

  5. 5

    Plug in the cable: Connect the BDT tuning cable to your OBDII port (lower dash, driver's side) and the USB end into your laptop.

  6. 6

    Share your TeamViewer ID & password: BDT logs into your laptop remotely, selects your exact calibration file, and loads it to the car — you watch it happen in real time.

  7. 7

    Key off on command: BDT tells you exactly when. The car resets all modules — temporary fault codes across every module are completely normal and will clear.

  8. 8

    Disconnect & drive: Remove charger (negative first, then positive), start the car, and go.

The whole flash takes about 15–20 minutes. BDT is live on call with you the entire time. You never click a button you're unsure about.

WATCH: HOW REMOTE TUNING WORKS

After the flash: Your car may show fault codes in multiple modules — this is 100% normal. When one module is flashed it tells every other module to reset. They clear on their own after a short drive cycle.
Can't make your scheduled time? Reschedule at least 1 hour in advance. Late arrivals without notice are subject to a $50 fee.
⚠️ WINDOWS LAPTOP REQUIRED (NO APPLE / MACOS) • 50+ Mbps INTERNET • MIN 8GB RAM / STABLE USB CONNECTION
Stage 1 Details — ~324 HP / ~414 TQ — 91/93 Octane — No Hardware Required
 

The B9 A4/A5 FWD 2.0T responds extremely well to intelligent calibration. Stage 1 transforms factory softness into strong midrange torque, clean throttle response, and refined pull-through power — all on completely stock hardware. FWD-optimized torque management keeps traction smooth and predictable.

Power

Stage HP TQ
Stock Advertised 232 HP 262 TQ
Stage 1 ~324 HP ~414 TQ

Stage 1 Extras

  • No hardware modifications required — stock supported
  • FWD-optimized torque management for smooth traction
  • Crackle/overrun in Dynamic/Sport mode only
  • Optimized boost and torque delivery
  • Intercooler and intake recommended for best consistency
  • High-flow exhaust: not required
Stage 2 Details — ~362 HP / ~442 TQ — 93 Octane — High-Flow Exhaust Required
 

Stage 2 turns the 2.0T into a sleeper missile: faster spool, harder mid-range torque, and crisp power delivery that stays smooth enough to daily. With a high-flow exhaust opening up the breathing, we push refined boost targeting, stronger torque management, and harder mid-range pull — all on pump gas. On FWD cars, traction becomes the limiter sooner — good tires and a healthy drivetrain matter.

Power

Stage HP TQ
Stock Advertised 232 HP 262 TQ
Stage 2 ~362 HP ~442 TQ

Stage 2 Requirements

  • High-Flow Cat / High-Flow Exhaust — REQUIRED
  • Intercooler: strongly recommended for heat control and repeatable gains
  • Air intake: recommended
  • TCU / DSG tune: highly recommended
  • Drivetrain inserts: recommended
FWD Note: Expect significantly more torque. Good tires and a healthy drivetrain matter. Traction control strategy remains OEM-style, but wheelspin is physics.

Crackle Pops / Overrun

Dynamic/Sport Mode Only — All Stages

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.

We offer three levels — Low, Medium, and High — so you can match your vibe. Subtle on stock exhaust, wild on aftermarket setups. Always tuned with RPM windows and exhaust-temp safeties.

Note: Effect may be more subtle on stock exhaust systems. Safety logic reduces crackles if exhaust temperatures rise excessively.

CRACKLE POPS / OVERRUN DEMO

Boost Control Optimization

From the factory, the stock ECU delivers a rough and inconsistent boost curve — often resulting in delayed throttle response and a lack of urgency under high load.

With BDT's ECU Calibration, we completely refine the boost control strategy to deliver:

  • Smoother, more linear boost delivery
  • Sharper throttle response
  • Consistent power across the entire powerband
  • Refined boost onset with reduced turbo lag

The result is immediate, predictable power that keeps you planted and fully engaged — especially important on the FWD platform where smooth torque delivery means better traction.

BDT Live Content

Dyno sessions, real customer results, and remote tuning walkthrough.

CRACKLE POPS / OVERRUN DEMO

HOW REMOTE TUNING WORKS

LIVE PHONE CHAT

Built for the Streets. Proven on the Dyno.

Whether you're carving through backroads or showing out at the next meet, BDT gives your B9 Audi the edge — with the refinement you expect from a luxury performance build.

Stop leaving power on the table. Pick your stage and elevate your driving experience with BDT's calibration for the 2017–2020 Audi A4/A5 2.0T FWD.

Maintenance Schedule (Required for All Tuned Vehicles)

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

I want your car to survive multiple years with my tune. This isn't a "nice to have" list — it's what I've seen work over years of tuning EA888 cars. If you can't afford the maintenance, please don't tune the car. This is how you keep it reliable.

 
Maintenance Item Interval
SPARK PLUGS
NGK R7438-8 Racing Plugs — ngk.com/ngk-4905-r7438-8-racing-plug		 15–20K mi
OIL CHANGE
5W-40 Liqui Moly • OEM FILTER ONLY		 5K mi
TRANSMISSION SERVICE / FLUSH (AUTO/DSG)
OEM Fluid Only		 30K mi
MAP SENSORS (OEM ONLY)
Intake / before throttle body		 50K mi
PCV ASSEMBLY 50K mi
INJECTORS + CARBON CLEANING
Do them on time — direct injection builds carbon. Avoid misfires, lean conditions, and long-term damage.		 65K mi

Late Policy: If you schedule an in-person flash and arrive late without notice, a $50 fee applies. Reschedules must be made at least 1 hour prior.

Frequently Asked Questions

 

Q: Which stage is right for me?
A: If you're completely stock with no hardware changes, Stage 1 is the entry point — no mods needed at all. If you're running a high-flow exhaust and want maximum power on pump gas, Stage 2 unlocks everything the IS20 has to offer.

 

Q: Is this FWD specific?
A: Yes — this calibration is built specifically for front-wheel drive A4/A5 models. Torque management is tuned for FWD traction characteristics. If you have a Quattro (AWD) model, contact BDT for the correct listing.

 

Q: Is this safe on a stock car?
A: Yes — Stage 1 is designed for factory hardware with OEM-style safeguards and torque modeling. Stage 2 requires supporting hardware as listed.

 

Q: What fuel do I need?
A: Stage 1 runs 91 or 93 octane. Stage 2 runs 93 octane for best results. We calibrate to your fuel quality and climate.

 

Q: Does Stage 2 require a high-flow exhaust?
A: Yes — a high-flow exhaust is non-negotiable for Stage 2. Intake and intercooler upgrades are also strongly recommended for heat control and repeatable results.

 

Q: Do I need a TCU / DSG tune?
A: For Stage 1, a TCU tune is optional. For Stage 2, it's highly recommended to handle the increased torque safely through the transmission.

 

Q: Do I need to visit a shop?
A: Nope. All stages flash from home through OBDII with remote support. Check the "How Remote Tuning Works" section above for the full step-by-step.

 

Q: What drive modes have crackles?
A: Dynamic/Sport mode only on all stages. Comfort/Auto stay refined and quiet.

 

Q: What computer do I need to flash?
A: A Windows laptop is required. macOS / Apple is not supported. You'll also need 50+ Mbps internet, 8GB RAM minimum, and a stable USB connection.

 

Q: Can I upgrade from Stage 1 to Stage 2 later?
A: Yes. No need to purchase the next stage at full price — purchase our retune option to jump to Stage 2 once you add your high-flow exhaust and supporting mods. Contact BDT to discuss upgrading.

 

Q: Will I have traction issues on FWD?
A: Especially at Stage 2, yes — the torque is significant. Good tires are essential. Power delivery is calibrated for control, but wheelspin is physics. Traction control remains OEM-style.

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

  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 inconsistent with this disclaimer, misrepresentation of vehicle use, or 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.

HIGH-FLOW EXHAUST 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.

Cable must be shipped back after tune is complete within 3 business days, or there will be a $1000 charge to your account.

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