Malossi Fuel Injection Control for 50cc 4-Stroke Yamaha Scooters SPECIFICATIONS: Carburation Adjusting ?? 20% at Min/Medium/Max 4 Different Maps: curve 0 : Fuel Adjustment Values Zeroed Out (CDI excluded) curve 1 : Malossi Cylinder and Original Exhaust System curve 2 : Malossi Cylinder and Tuned Exhaust System curve 3 : Fuel Adjustment Values Zeroed Out (CDI excluded) COMPATIBILITY: C3 Giggle 50 4T Vino 50 4T Zuma 50F 4T The Malossi Force Master 2 CDI allows to change the injection in order to fit perfectly the new big bore cylinder kit. 66cc Big Bore cylinder for new water-cooled Yamaha 4-stroke 50cc engines with injection. 44mm bore = 66.11cc capacity meaning great torque and improved acceleration. The Force Master 2 ECU unit features 3 programs for best tune fuel consumption. Well-engineered cylinder, piston and rings. Great for daily use. **