Using A CDI On A Motorbike With Twin Coils

摘要

I found your website while researching building my own CDI for an old Suzuki GN400 street bike. I have tried many other CDI units on the GN400 but none really work well because the GN400 actually uses two trigger coils. One coil is for starting/ idle and fires 10° BTDC and the other is fired 35° BTDC for engine speeds above 2500 RPM. I once got the engine running on a Honda CH250 CDI, wired to the 35° coil. It was quite painful to start but it ran like a banshee once it was running!