BGM PRO CDI for IDM retrofit ignitions -original optics in connection with an optimized ignition curve for touring engines- THE PROBLEM OF ORIGINAL IDM CDI ON TOURING ENGINES All IDM-based ignitions (Vespatronic, Malossi VesPower, Polini IDM, Varitronic, Pinasco Flytech, Parmakit etc.) use the same CDI. Their ignition curve is designed for high-performance engines with late performance and high speeds. [...]