I purchased a Drag Specialties Minitach for my 2005 C50 Boulevard. I had the dealer install it because I am lost in electrical wiring schematics. On the ride home, I noticed that at 70 MPH, I was indicating only 2100 RPM in fifth gear. That seemed about half of what I was expecting.
According to Drag Specialties, I need a single fire adapter, basically three wires, two diodes, and some resistance. I was told that a bike that has one ignition coil to fire both cylinders is a dual fire and a bike that had a coil for each cylinder is a single fire...the reason I need the adapter.
However.....a few guys with older Volusia's say they didn't need an adapter. Could the additional of fuel injection have caused Suzuki to also add another coil, one for each cylinder? I have already ordered the adapter, tach is on and reading half of actual and waiting to see if the adapter was worth the money. Any help will be appreciated.