It is dual fire as it fires on compression and exhaust stroke so it halves your rpm. It is getting the signal twice in one revolution.
The Problem is not the problem, The problem is your additude towards the problem.
07 Sadow Spirit 750 DC.
4* timing mod, Hole saw Mod, Sissy bar, Kury Skythe mirrors, cobra swept floor boards. Kury Iso grips. 12 V & USB outlets, Crash Bar/ Engine Guard.