Siemens SDI3/SDI4

New AT Protocol!

Dear Users,

It is time to revisit the legends! We are pleased to announce the support for Siemens SDI3 & SDI4 ECUs via the diagnostic port.

You can now tune a massive range of "Modern Classic" Porsches, from the agility of the Boxster to the power of the Cayenne V8.

Supported Models:

✅ Porsche 911 (997): 3.6 & 3.8 (Carrera, Turbo, S, GTS)
✅ Porsche Boxster / Cayman (987): 2.9, 3.4 (S, R)
✅ Porsche Cayenne & Panamera: 4.8 V8 (GTS, Turbo, Turbo S)

⚙️ Method: These protocols are available in OBD Normal Read (NR). This allows you to perform a real read of the ECU. This is the perfect method to check if these older vehicles have been previously tuned!

Give these legends a second youth now with your Tool!

The AT Team

Key Features

• Type: Engine Control Unit (ECU) ⚙️
• Mode: OBD NR 🔌
• Readout: Calibration 🧩
• MCU: TC1796 🖥️
• Read time: 30 sec ⏱️
• Write time: 1 min 30 sec ⏱️
• Checksums correction ✅

Compatibility List*

🚗 Models: 911 (2004) / Boxster (2005) / Cayman (2006) / Cayenne (2007) / Cayenne (2014) / Panamera (2013)
🔧 Engines: 2.9 DFI 24v / 3.4 DFI R / 3.4 DFI S / 3.4i 24v S / 3.6 Carrera / 3.6i Turbo / 3.8 DFI / 3.8 DFI Turbo / 3.8 DFI Turbo S / 3.8i DFI Carrera GTS / 3.8i DFI Carrera S / 4.8 V8 / 4.8 V8 GTS / 4.8 V8 Turbo / 4.8 V8 Turbo S

*The list of vehicles may evolve over time.