Malossi ECU Unit Injtronic 5518913B – Euro 5 Piaggio / Vespa 50cc iGET

The Malossi Injtronic ECU 5518913B is designed for Piaggio and Vespa 50cc scooters with Euro 5 iGET 4-stroke engines. It replaces the original ECU and provides significant improvements in acceleration and top speed, while remaining fully compatible with the original electronics and sensors.

This unit works on models with or without the SAI system (secondary air injection). A “B” on the bottom corner of the label identifies this version. Please note: Not compatible with 2024 models and not suitable for Euro 4 or 80cc kits.

Key specifications:

• Malossi part number: 5518913B
• Type: Injtronic ECU for original 50cc cylinders
• Rev limit: 10,000 RPM
• 32-bit processor for precise engine control
• Includes installation instructions

Compatible with:

• Vespa Primavera / Sprint 50cc 4T 3V iGET Euro 5
• Piaggio Zip 50cc 4T 3V iGET Euro 5 (until model year 2023)
• Piaggio Liberty 50cc 4T 3V iGET Euro 5

⚠️ Not compatible with:

• Model year 2024 and newer (MIL light stays on due to missing SAI system)
• Euro 4 models
• Scooters with 80cc kits (use different ECU)

Performance examples:

• 25 km/h version: with Malossi ECU + Multivar + intake hose → approx. 64 km/h
• 45 km/h version: with Malossi ECU + Multivar + intake hose → approx. 64 km/h

Installation tip: Always perform a TPS (Throttle Position Sensor) reset after installing the ECU to ensure proper synchronization.