MALOSSI O2 controller – Lambda emulator – Vespa GTS 300 – from year of manufacture 2021 – 5518988B

In combination with the Force Master 3 controller, performance can be optimized even further using this improved lambda sensor.

If you have fitted a different exhaust, then this O2 controller is a must as the new exhaust will cause different Lambda sensor values.

Download the product manual here.