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Message: <blockquote data-quote="Rednaxs60" data-source="post: 227006" data-attributes="member: 4617">I'm answering all my questions as I dig deeper into this replacement/upgrade.  Question I had was how many coils and spark igniters do I need with sequential fuel injection.  The answer I have been able to find is 4 coils and 4 spark igniters.  Can get away with two coils, but the charge time between firings is considerably less and this can/could affect the firing of the cylinder.  COP is at the top of the list for doing sequential fuel injection because of this.  I have read that sequential fuel injection is beneficial at lower powers, idle and environmentally, but the lines get blurred as the engine operation and motorcycle speed is increased significantly.  The spark igniter are a different kettle of fish because these only change the grounding of the coils and as such just do double duty.  Would have to look at the wiring schematic to come up with a game plan.  I have a set of spare igniter units that can be installed.  Real estate is getting very scarce.  May have a source for a 36-1 trigger wheel sourced that can be installed where the existing trigger wheel is located.  May have to modify the sensor position to allow for space between the sensor and trigger wheel, or file down the teeth a tad - the wheel I have seen is 76.6 mm instead of 75.5 mm.  This wheel that I have found has a smaller centre hole that would have to be enlarged.  Would be able to install the Speeduino without using a cam sensor.  Thinking about this.  Have seen some trigger wheels made with a grinding wheel.  Also an option.More reading and research regarding Gold Wing EFI conversions.</blockquote>

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