The MALOSSI Lambda Emulator "TC Unit O2 controller" is simply plugged between the lambda sensor and it's regulator unit. The MALOSSI module simulates the signal of the original PIAGGIO unit while simultaneously ensuring the correct fuel/air mixture suitable for more highly tuned motor set ups. This MALOSSI unit allows a straightforward "plug and play" power increase for fuel injected motors, preventing the CDI unit being confused with electronic "error" messages.