RyuFlynn wrote: ↑Wed May 01, 2024 9:52 pm
I was hoping to be able to use the stock pickups. The tachometer is pretty dead accurate. Would I able able to use the cylinder 1/4 since that would signal close to TDC of cylinder 1&4.
The injector end-point timing is adjustable.
RyuFlynn wrote: ↑Wed May 01, 2024 9:52 pmI know I will be running in bank fire mode since I have no real way of adding a cam sensor without redesigning the valve cover.
You have more options than bank fire. My pick would be un-timed quasi-sequential, where injectors are fired alternating in pairs (1-4 & 2-3)
and fired twice per cycle. That will provide two injections per cylinder, one at each cylinder's TDC (or whatever timing you select). Identical fuel distribution and identical timing to each cylinder across the cycle, no matter which stroke it starts on.
RyuFlynn wrote: ↑Wed May 01, 2024 9:52 pmAlso dumb question but can I utilize the 2 sensors since they are 180 out from each outer essentially giving 2 signals per rotation of the crank just like the cam would?
Two sensors, yes. Like a cam, no. Two sensors would read like one sensor with two teeth, with the potential gain of doubling resolution.
RyuFlynn wrote: ↑Wed May 01, 2024 9:52 pmWould I be able to tap off and run a diode on each wire as to not back feed and give a dummy camshaft signal?
Probably. I would test the setup in order to verify the signal pattern you actually produced. As you are using the TCI, we do not want to affect the sensor signals to that, and would treat it like a piggyback. So a high-impedance VR conditioner is required, such as the Speeduino store MAX9926, or the MiniMAX-A2.
However, if diodes are needed, the voltage forward (V
F) could affect the signal to the TCI, and function testing would be required to verify no negative effects. This test would be the first to the stock bike as the only change. If no joy, then you're back to tapping only one sensor, but I am optimistic.