New AT Protocol!
Dear Users,
Tuning options for the VAG group's flagship petrol engines have just evolved significantly!
Previously, we released an OBD solution for specific MG1CS031 ECUs, strictly limited to the Bosch part number 06N907309A H80. Unfortunately, this only covered a fraction of the vehicles on the road. Other critical variations, such as the highly common 06N907309B H80 reference, were left unsupported.
Today, we are removing all limitations. We are thrilled to introduce a complete tuning solution for ALL recent 2.0 TSI / 2.0 TFSI engines managed by Bosch MG1CS031 (including CAN variants) and MG1CS142 ECUs on your AT Tool!
🔒 A secure workflow (Mail-in ➡️ Bench): To bypass the sophisticated factory protections on these modern ECUs, a seamless two-step process is required:
Mail-in Unlock: The ECU must first be sent to our facility for a secure hardware unlock by our engineering team. Order it here.
Bench: Once returned to your workshop, you gain total Bench access to safely read (Bootloader + Software + Calibration) and write directly on your workbench.
💡 What this means for you: No more checking part number suffixes (A, B, or otherwise). Every single MG1CS031 variant on the market, alongside the brand-new MG1CS142 found up to 2025 models, is now fully supported.
US Coverage:
Audi A3, A4, and A5 (2.0T MHEV 40 TFSI) from 2021.
Global Coverage Highlights:
Audi: A1, A3, A4, A5, Q2, Q3, Q5, TT (35/40 TFSI & TSI versions) — from 2017 to 2025 models!
Volkswagen: Golf 8, Tiguan, Passat, Arteon, Polo, T-Roc (from 2017 to 2024+ models).
Cupra & Seat: Formentor, Leon, Ateca, Tarraco.
Skoda: Octavia, Superb, Kodiaq, Karoq.
Update your software today and take ultimate control over 100% of this essential tuning segment!
The AT Team
Key Features
- Type: Engine Control Unit (ECU) ⚙️
- Mode: Bench NR 🔌
- MCUs: TC298/TC387 🖥️
- Read time: 2min ⏱️
- Write time: 30sec ⏱️
- Checksums correction ✅
- Backup creation 🔄
- Remote unlock required 📦
US Compatibility List
- 2022+ Audi A3 (8Y.x) 2.0T EA888.4 LK1 201 HP MHEV (40 TFSI)
- 2021+ Audi A4 (B9.x) 2.0T EA888.4 LK1 201 HP MHEV (40 TFSI)
- 2021+ Audi A5 (B9.x) 2.0T EA888.4 LK1 201 HP MHEV (40 TFSI)
- 2022+ Audi Q5 (B9.x) 2.0T EA888.4 LK1 201 HP MHEV (40 TFSI)
Global Compatibility List*
🚗 Audi Models: A1 (2018+) / A3 (2019+) / A4 (2018+) / A5 (2019+) / Q2 (2021+) / Q3 (2018, 2025+) / Q5 (2017+) / TT (2018+)
🔧 Audi Engines: 2.0 TSI / 2.0 TSI EU6d / 35 TFSI (2.0) / 40 TFSI (2.0) / 40 TFSI (2.0) EU6d
🚗 Cupra Model: Formentor (2020+)
🔧 Cupra Engine: 2.0 TSI EU6d
🚗 Seat Models: Ateca (2020+) / Leon (2020) / Tarraco (2019+)
🔧 Seat Engine: 2.0 TSI EU6d
🚗 Skoda Models: Karoq (2022+) / Kodiaq (2023+) / Octavia (2020+) / Superb (2019 – 2023+)
🔧 Skoda Engines: 2.0 TSI / 2.0 TSI EU6 / 2.0 TSI EU6d
🚗 Volkswagen Models: Arteon (2020+) / Golf (2020+) / Passat (2019+, 2023+) / Polo (2021+) / T-Roc (2017+) / Tiguan (2021+, 2024+)
🔧 Volkswagen Engines: 2.0 TSI / 2.0 TSI EU6 / 2.0 TSI EU6d
