I do have the program set for edge triggering.

I checked with my scope and verified a pickup signal pulse of .8 volts I am not sure how much this will increase with rpm. Pickup pulse seems plenty wide enough for level type interrupt which would be more favorable to edge type with respect to noise/spikes I assume. Hmmm.. .8 volts from the pickup, I could probably use a small signal diode and current limiting resistor in series with the pickups and INT0 and INT1 and do away with the optocouplers on the input end of the MCU.

Make Sense?

Thanks

James Krushlucki