BGM CDI-IDM/Ignition coil (blue): Varitronic, Parmakit, etc. Touring, fixed timing

BGM PRO CDI for IDM retrofit ignitions

-Original look combined 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 a late power input and high rpm.

On touring engines, with an early and high torque, this ignition curve is rather counterproductive. It often leads to engine judder in part-load operation due to an ignition timing that is too early for the low engine speed. Due to the large adjustment range (8°) of the original CDI, the ignition timing must be selected early. Otherwise the performance in the upper speed range suffers, because the CDI already reduces the ignition timing strongly.

ADVANTAGES OF THE BGM PRO CDI ON TOURING ENGINES

The BGM PRO CDI has a fixed ignition timing. It offers ideal working conditions to engines that have a similar power/torque curve to an original engine. There is no need to adjust the ignition timing, the engine runs quieter and smoother and also develops more power, especially in the range above peak power (overrev). As a result, you have an engine that is much more touring friendly and usually a little faster on the road.

replaces the original IDM CDI

no partial jerking

higher performance

original optics

screwable ignition cable

FURTHER ADVANTAGES OF THE BGM PRO CDI

Compared to an original IDM CDI, the ignition cable can be screwed in. Ideal if the CDI should be positioned differently or simply the ignition cable should be replaced.

CONCLUSION: Nice addition for converted engines that should be even better.