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2015 - 2021 Audi TT 2.0T Stage 2

$450 - $700

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7.00 (in)

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Remote OBDII Flash In-House Calibration ⚡ IS20 Stage 2 Power 5-Map + RAL + Launch

BDT Stage 2 ECU Tune

2016–2023 Audi TT (8S • EA888 Gen 3 • IS20)

Your TT already turns heads — but from the factory it’s holding back. BDT Stage 2 unlocks what the 8S TT was always meant to feel like: sharper throttle, harder mid-range pull, and power that stays clean to redline. The result is a car that feels lighter on its feet, quicker everywhere, and more fun every time you roll into boost.

⚡ Install via OBDII View Gains Required Mods Map Layout

Fitment & Compatibility

Vehicle

2016–2023 Audi TT / TTS (8S) 2.0T
Engine: EA888 Gen 3 • IS20
Quattro
DSG & Manual supported
Remote OBDII flashing compatible

Stage 2 Summary

Designed around a high-flow downpipe
Boost control tuned for smoother onset + stability
Safeties built in for IAT/EGT management
5-map switching + RAL + launch features (as applicable)

BDT Calibration System (Next-Level Stage 2 Tech)

Refined Power Delivery

Stage 2 should feel fast and clean. We focus on response, stability, and repeatability — not just peak numbers.

Refined torque model for predictable throttle feel
Modern boost strategy for stable targets and consistent pulls
IAT + EGT safety logic to protect the turbo/engine

Driver-Controlled Profiles

Your TT can go from daily to aggressive in seconds — without turning into a mess.

5-map switching via cruise controls
RAL (Rolling Anti-Lag) capability (track/off-road)
2-step (Manual) / Boosted Launch (DSG) behavior

▶️ View Multi-Map + RAL Live ▶️ View Map Switching Video

Stage 2 Features

Performance & Control

Refined boost control — linear onset, smoother long-pull stability
Reduced turbo lag
Fuel/torque request optimized by load & throttle
Torque limiters raised
LPFP/HPFP targets optimized
VVT optimization

Convenience + Driver Features

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) behavior
Speed limiter removed • Neutral/Park rev limit raised
Auto Start/Stop defaults off (feature remains functional)
Stock boost gauge re-scaled to display higher boost
OBDII port flashing — quick install at home or in-shop

Crackle Pops (Optional)

Add real auditory character with controlled overrun — perfect for owners who want aggressive decel sound without sacrificing safety.

What it does

Controlled & safe implementation
Active only in Dynamic/Sport mode
Sharper pops with aftermarket exhausts

Safety logic

Automatic reduction if exhaust temps climb too high
Designed to protect turbo and engine under heat
Selectable via maps / setup dependent

Power Gains

SEO power summary: BDT Stage 2 for the 2016–2023 Audi TT 8S EA888 Gen 3 IS20 delivers strong midrange torque and clean top-end pull, with expected gains up to 315 WHP / 365 WTQ on 93 octane with the required downpipe.

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.

Stage	Horsepower	Torque
Stock (Audi advertised numbers)	280 HP	280 TQ
Stock (BDT dyno numbers)	260 WHP	225 WTQ
Stage 2 (Wheel horsepower)	315 WHP	365 WTQ
Stage 2 (Crank horsepower)	362 HP	420 TQ

BDT publishes live before/after runs for transparency.

ECU Tune Modification Requirements

SEO mod summary: Stage 2 tuning for the Audi TT 8S EA888 Gen 3 IS20 requires a high-flow downpipe and is best paired with intake, intercooler, and drivetrain upgrades for lower temps and consistent performance.

Stage 2 Hardware Requirements (quick view)

Required: High-flow downpipe
Recommended: Intake, upgraded intercooler, drivetrain insert upgrades
Highly recommended: BDT TCU tune (especially for DSG)

Part / Upgrade	Required	Recommended
TCU Tune	—	Highly Recommended
Air Intake	—	X
Intercooler	—	X
Drivetrain Insert Upgrades	—	X
High-Flow Downpipe	X	—

Multi-Map Layout (5 Maps)

How switching works

You switch between 5 maps on the fly using cruise control buttons. Each map has its own boost/behavior setup.

Map behavior is performance-focused and intended for appropriate use cases. Always match fuel to the map.

Fuel rule (important)

Map 4 requires 100 octane. If you don’t have the fuel, don’t run the map.

Maps 1–3 are designed for 91/93 octane depending on your file.

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

What mods are required for BDT Stage 2 on my Audi TT 8S?

Stage 2 requires a high-flow downpipe. Intake, intercooler, and drivetrain inserts are strongly recommended for best temps, consistency, and traction.

Is Stage 2 safe on the stock IS20 turbo?

Yes — when the required hardware and maintenance are followed. Stage 2 is built around safe boost behavior with IAT/EGT targets and multiple layers of protection to support long-term reliability.

What fuel do I need?

Maps 1–3 are designed for 91/93 octane depending on your file. Map 4 is a race map and requires 100 octane. If you don’t have the fuel, don’t run the map.

Do I need a TCU tune for DSG?

You don’t need it to flash Stage 2, but it’s highly recommended. A TCU tune improves clutch pressure, shift logic, and torque handling so the car performs the way it should.

How does multi-map switching work?

You switch between 5 maps on the fly using cruise control buttons. Each map has its own boost/behavior setup so your TT can go from daily to race to valet in seconds.

Maintenance (Read This If You Want Your Car To Survive)

Real talk: high-performance tuning demands real maintenance. This guide exists so your car survives years — not weeks. If you can’t afford the maintenance, don’t tune the car.

This section is intentionally direct to prevent avoidable failures and blame-shifting.

Maintenance Schedule	Miles
Spark Plugs View NGK Racing Plugs	15–20K
Oil Change 5W-40 Liquid Moly Oil filter = OEM only	5K
Rear Haldex Fluid	30K
Transmission Flush/Filter OEM only	30K
MAP Sensors OEM only (mandatory) — Intake / before throttle body	50K
PCV Assembly	50K
Injectors + Carbon Cleaning Do them — ignoring this is how engines die.	65K

Optimized for 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023 Audi TT 8S 2.0T EA888 Gen 3 IS20 quattro platforms. Stage 2 tuning includes Rolling Anti-Lag (RAL), 2-step launch control, crackle pops, multi-map switching, remote OBDII flashing, boost control optimization, and dyno-proven gains. Audi TT DSG Stage 2 tune, Audi TT manual Stage 2 tune, Audi TT downpipe tune, best Audi TT Stage 2 ECU tune, remote Audi TT tuning, Audi TT Stage 2 horsepower gains, Audi TT Stage 2 torque gains.

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 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.