Sale
2011 - 2018 Audi S8 4.0 TFSI V8 ECU TUNE (Remote Tune)
$400.00 - $1,100.00
Sale
2011 - 2018 AUDI A8 4.0 TFSI V8 ECU TUNE (Remote Tune)
$500.00
$400.00
Audi A8 D4 4.0T — Choose Your Stage
2011–2018 Audi A8 • 4.0T Twin-Turbo V8 • Quattro AWD
Stage 1
595 HP
655 TQ
Stock Hardware
Stage 2
610 HP
652 TQ
High-Flow Exhaust Req.
Stage 3
680 HP
740 TQ
Turbo Upgrade Req.
BOOST DYNAMIC TUNING
BDT Stage 1 ECU Tune
2011–2018 Audi A8 D4 • 4.0T Twin-Turbo V8 • Quattro AWD
Your twin-turbo 4.0L is already an animal — but the factory file keeps it on a leash. BDT Stage 1 delivers 595 HP / 655 TQ by safely maxing out the factory turbochargers. Be ready for a reliable everyday commute, or launch down the drag strip at any time.
Stage 1 Stock Hardware Quattro AWD OEM Safety Logic Remote OBDII Flash
Stage 1 Requirements: No hardware required — stock twin-turbo supported. An intercooler and intake are recommended.
Fitment & Compatibility
Confirm your exact engine and hardware before purchase.
Vehicle: 2011–2018 Audi A8 (D4 / D4.5)
Engine: 4.0T TFSI Twin-Turbo V8
- Quattro AWD
- Tiptronic automatic supported
- Remote OBDII flashing compatible
- ECU: MG1 / MED17 series — all regional box codes supported
Also Available: 3.0T Supercharged V6 — contact BDT for 3.0T-specific power figures and calibration details.
Stage 1 Driving Feel
- Throttle: instant pedal response, sharper tip-in
- Midrange: stronger pull through every gear
- Boost: higher, more stable pressure — smoother ramp
- Daily: OEM-smooth cruising, violent when you want it
91 / 93 / 100+ OCTANE
Why Choose BDT?
- 4.0T Twin-Turbo Expertise: Purpose-built calibrations for the Audi 4.0T TFSI platform with 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 A8 via OBDII at home. No ECU shipping. No shop scheduling.
- Dyno-Tested & Street-Proven: Backed by data and validated under real load.
- World-Record Performance on multiple Audi platforms.
Stage 1 Highlights
- +80–120 HP / +90–150 TQ Gains (depending on fuel grade)
- Speed Limiter Removed
- Rev Limiter Adjusted for a more aggressive powerband
- Torque Limiters Raised across the board
- Throttle Mapping Enhanced
- Boost Optimization • higher, stable pressure
- Fueling & Timing Adjusted for peak efficiency
- Cold Start Catalyst Protection retained
- Crackle Pop (Optional) • Low / Medium / Intense
- COD Delete • Disable Cylinder-On-Demand for full V8 operation
- Left-Foot Braking & Brake Boosting
- Diagnostic Mode • Clear DTCs and adaptations
- OBDII Port Flashing
Power Gains
Expected Stage 1 gains on 93 octane: up to 595 HP / 655 TQ
| Stage | Horsepower | Torque |
|---|---|---|
| Stock Audi advertised | 420 HP | 406 TQ |
| Stock BDT dyno | 419 HP | 405 TQ |
| Stage 1 93 octane | 595 HP | 655 TQ |
Octane-specific calibrations available: 91 / 93 / 100+ AKI (USA) • 95 / 98 / 104 RON (International)
Stage 1 Hardware Requirements
No hardware required. Stock twin-turbo supported right out of the box.
✓ Cross-Stage Upgrade Matrix
| Stage | TCU | High-Flow Exhaust | Intercooler | Intake | Turbo Upgrade |
|---|---|---|---|---|---|
| Stage 1 | — | — | — | — | — |
| Stage 2 | — | YES | — | — | — |
| Stage 3 | YES | YES | YES | YES | YES |
Exclusive BDT Software Options
- Crackle Pop (Optional) — Select your preferred aggression level (Low / Medium / Intense)
- Left-Foot Braking & Brake Boosting — Build boost before launch
- Cylinder-On-Demand Delete — Disable COD for full V8 operation at all times
- Diagnostic Mode — Clear DTCs and adaptations directly from your BDT interface
- Free Lifetime Updates — Stay current with new revisions
- 30-Day Satisfaction Guarantee
BOOST DYNAMIC TUNING
BDT Stage 2 ECU Tune
2011–2018 Audi A8 D4 • 4.0T Twin-Turbo V8 • Quattro AWD
Stage 2 is everything you need to wake up the potential of your twin-turbocharged 4.0L A8. BDT Stage 2 methodically increases performance power without any sacrifice in drivability or reliability — safely maxing out the factory turbochargers. Leaving those unsuspecting Hellcat owners with a bruised ego.
Stage 2 Calibrated Quattro AWD High-Flow Exhaust Req. Remote OBDII Flash
Stage 2 Requirement: A high-flow exhaust is required. TCU tune, intercooler, and intake are strongly recommended.
Stage 2 Highlights
- 610 HP / 652 TQ on 93 octane
- Speed Limiter Removed
- Neutral/Park Rev Limiter Raised (TCU tune required)
- Auto-Start/Stop Defaults to Off (still active)
- Torque Limiters Raised
- Boost Gauge Calibrated to display higher boost
- Increased Overrun/Crackle (in Dynamic mode)
- Boost Control Refined for linear boost onset
- Turbocharger Lag Reduced
- LPFP Pressure Increased
- HPFP Pressure Increased
- Variable Valve Timing Recalibration
- OBDII Port Flashing
Crackle Pops
Also known as overrun. When decelerating from higher RPMs or free-revving in neutral/park, you will hear crackle pops from the exhaust. Hard to hear on factory exhaust setups — rowdy with a high-flow exhaust or catback.
Boost Control
From factory, the ECU boost control delivers a bumpy, uneven curve — resulting in slow boost response during full pulls. BDT Stage 2 refines and smooths this boost curve to achieve crisp, unmatched power delivery when pushing your car to the limit.
Power Gains
| Stage | Horsepower | Torque |
|---|---|---|
| Stock Audi advertised | 420 HP | 406 TQ |
| Stock BDT dyno | 419 HP | 405 TQ |
| Stage 1 93 octane | 595 HP | 655 TQ |
| Stage 2 93 octane | 610 HP | 652 TQ |
Stage 2 Hardware Requirements
High-flow exhaust is required for Stage 2.
| Part / Upgrade | Required | Recommended |
|---|---|---|
| High-Flow Exhaust | YES | — |
| TCU Tune | — | HIGHLY REC. |
| Air Intake | — | YES |
| Intercooler | — | YES |
| Drivetrain Insert Upgrades | — | YES |
BOOST DYNAMIC TUNING
BDT Stage 3 ECU Tune
2011–2018 Audi A8 D4 • 4.0T Twin-Turbo V8 • Quattro AWD
Stage 3 is the full-send build. With upgraded turbos, BDT Stage 3 delivers 680 HP / 740 TQ — aggressive crackle pops, refined boost control, and power that puts supercar owners on notice.
Turbo Upgrade Req. Quattro AWD Aggressive Crackle Remote OBDII Flash
Stage 3 is a full turbo-upgrade build. Turbos, high-flow exhaust, intercooler, intake, and TCU tune all required.
Stage 3 Highlights
- 680 HP / 740 TQ on 93 octane
- Speed Limiter Removed
- Neutral/Park Rev Limiter Raised (TCU tune required)
- Torque Limiters Raised
- Aggressive Overrun/Crackle (in Dynamic mode)
- Boost Control Refined for linear boost onset
- Turbocharger Lag Reduced
- LPFP Pressure Increased
- HPFP Pressure Increased
- OBDII Port Flashing (remote supported)
Crackle Pops
Also known as overrun. When decelerating from higher RPMs or free-revving in neutral/park, you will hear aggressive crackle pops from the exhaust. Hard to hear on factory exhaust setups — rowdy with a high-flow exhaust or catback.
Boost Control
BDT Stage 3 refines and smooths the boost curve for crisp, unmatched power delivery across the entire powerband. No surge, no lag — just clean, linear boost from a platform built to handle serious power.
Power Gains
| Stage | Horsepower | Torque |
|---|---|---|
| Stock Audi advertised | 420 HP | 406 TQ |
| Stock BDT dyno | 419 HP | 405 TQ |
| Stage 3 93 octane | 680 HP | 740 TQ |
Stage 3 Modification Requirements
Stage 3 is a turbo-upgrade package. If the supporting parts aren't there, the tune can't do its job safely or consistently.
| Part / Upgrade | Required | Recommended |
|---|---|---|
| Turbo Upgrade | YES | — |
| High-Flow Exhaust | YES | — |
| TCU Tune | YES | — |
| Intercooler | YES | — |
| Air Intake | YES | — |
| Turbo Inlet Pipe | — | YES |
| HPFP Upgrade | — | YES |
| Catback Exhaust | — | YES |
⚠️ SOFTWARE REQUIREMENTS: Windows PC or laptop required for remote flashing. 50+ Mbps internet • 8GB+ RAM • TeamViewer installed. Mac is not supported at this time.
How Remote Tuning Works
Flash your A8 from home — no shop visit needed.
1
Schedule Your Flash — After purchase, scan the QR code or contact BDT to book your appointment.
2
Download TeamViewer — Install on your Windows laptop. BDT remotes in to run the flash software.
3
Hook Up Battery Charger — Positive first, then negative. Stable voltage is critical.
4
Turn Car to Accessory Mode — Key in ignition or press start without brake. Do not start the engine.
5
Plug In OBDII Cable — Connect to the OBDII port (driver side, under dash).
6
BDT Takes Remote Control — We handle everything. You watch the entire process live.
7
Key Off on Command — When BDT says “turn key off,” do it immediately.
8
Disconnect & Drive — Unplug OBDII, remove charger (negative first, then positive), start the car, enjoy.
Post-Flash Note: You may see a few fault codes after flashing — this is normal. They clear after a short drive cycle.
HOW REMOTE TUNING WORKS
Frequently Asked Questions
Q: What mods are required for Stage 1?
A: None. Stage 1 supports stock hardware. Intercooler and intake are recommended for best temps.
Q: What mods are required for Stage 2?
A: A high-flow exhaust is required. TCU tune, intercooler, intake, and drivetrain inserts are strongly recommended.
Q: What mods are required for Stage 3?
A: Turbo upgrade, high-flow exhaust, TCU tune, intercooler, and air intake are all required. Turbo inlet pipe, HPFP upgrade, and catback exhaust are recommended.
Q: What is COD Delete?
A: Cylinder-On-Demand (COD) shuts down cylinders to save fuel during light cruising. BDT can disable this feature so all 8 cylinders fire at all times — giving you consistent V8 power and sound.
Q: Is Stage 1 safe on the stock turbos?
A: Yes — when maintenance is followed. Stage 1 is calibrated to safely maximize the factory twin-turbo setup with proper boost targets and safety logic.
Q: What fuel do I need?
A: Only use high-quality fuel equal to or greater than your selected tune level. Available for 91 / 93 / 100+ AKI (USA) and 95 / 98 / 104 RON (International). Never run a lower octane than specified.
Q: Do I need a TCU tune?
A: Not required for Stage 1, but highly recommended for Stage 2 and required for Stage 3. TCU raises torque limits, improves shift logic, and unlocks neutral/park rev limiter.
Q: Do you support the 3.0T Supercharged A8?
A: Yes. Contact BDT directly for 3.0T-specific power figures and calibration details.
Q: Do I need a Windows computer?
A: Yes. The flashing software requires Windows. Mac is not supported. 50+ Mbps internet and 8GB+ RAM required.
Q: Can I flash back to stock?
A: Yes — your A8 can be returned to the factory calibration at any time via OBDII.
Maintenance (Read This)
IF YOU WANT YOUR CAR TO SURVIVE, THESE MUST BE DONE!
We want your A8 to live a long, happy tuned life. These intervals come from years of tuning the 4.0T platform. If these aren't kept up, failures happen — and it won't be the tune.
| Maintenance Item | Interval |
|---|---|
| SPARK PLUGS NGK R7437-8 • .024 gap |
15–20K mi |
| OIL CHANGE 5W-40 Liqui Moly • OEM FILTER ONLY |
5K mi |
| MAP SENSORS OEM only • Intake / before throttle body |
80K mi |
| PCV ASSEMBLY | 80K mi |
| INJECTORS + CARBON CLEANING Do them on time to avoid misfires, lean conditions, and long-term damage. |
85K 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.
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:
- 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 inconsistent with this disclaimer, misrepresentation of vehicle use, or 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 legality 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, WHETHER IN THE USA OR OTHERWISE, THE PRODUCT IS NOT DESIGNED TO BE 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.
2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018 Audi A8 D4 D4.5 4.0T TFSI Twin-Turbo V8 Quattro AWD. Stage 1, Stage 2, and Stage 3 ECU tuning includes crackle pops, COD delete, left-foot braking, brake boosting, refined boost control, reduced turbo lag, VVT recalibration, and OEM-safe protection logic. This Audi A8 ECU tune is flashable via OBDII and calibrated in-house by Boost Dynamic Tuning. audi a8 ecu tune, audi a8 4.0t tune, audi a8 stage 1 tune, audi a8 stage 2 tune, audi a8 stage 3 tune, audi a8 d4 tune, audi a8 d4.5 tune, a8 4.0t twin turbo tune, a8 crackle tune, a8 crackle pops, a8 overrun tune, a8 boost control, a8 cod delete, a8 cylinder on demand delete, a8 remote tune, a8 obd2 flash, a8 ecu remap, a8 ecu flash, a8 performance tune, a8 performance software, a8 dyno tune, a8 93 octane tune, a8 91 octane tune, a8 100 octane tune, a8 intercooler tune, a8 high-flow exhaust tune, a8 big turbo tune, a8 turbo upgrade tune, a8 speed limiter removed, a8 rev limiter, a8 torque limiter, a8 tcu tune, a8 transmission tune, a8 tiptronic tune, boost dynamic tuning a8, bdt a8 tune, bdt a8 4.0t, bdt stage 1 a8, bdt stage 2 a8, bdt stage 3 a8, best audi a8 tune, best a8 4.0t tune, audi a8 stage 1, audi a8 stage 2, audi a8 stage 3, 2011 a8 tune, 2012 a8 tune, 2013 a8 tune, 2014 a8 tune, 2015 a8 tune, 2016 a8 tune, 2017 a8 tune, 2018 a8 tune, a8 left foot braking tune, a8 brake boosting, a8 diagnostic mode, a8 free lifetime updates, a8 satisfaction guarantee, audi 4.0t performance tune, audi 4.0t ecu calibration, a8 quattro tune, a8 awd tune, a8 mg1 ecu tune, a8 med17 ecu tune, best a8 tune 2025, best a8 tune 2026
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Reviews
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2017 Audi A8L
I put rs7 turbos and downpipes on. I got it tuned and it was a quick and easy process. The tune is great I had it flashed first with intense crackles then I got a reflash/retune to light burbles. Both tunes are excellent. No problems at all and Ive put over 10,000 miles on my car. The tune is smooth and it adds a lot of power. I also got the tcu tune which just made everything better. It drives like a factory car with almost 800hp. Its the best tune I've seen around. My friends have gone with other companies but they have problems and I don't even when my car has more miles. Customer service is on point.
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Stage 2 tune
This tune is the best bang for your buck! Turned my A8L into a legitimate BEAST! But when you're driving normally it's not like most tunes where you get the weird performance in normal conditions. Hands down love this tune!