Scott,
I realise this has strayed from the original topic somewhat but,
I've studied the pinouts for both the V44 & V88. Just curious how the DI5 pull-up (not available on the V44) affects the V44's knock detection program, yet doesn't affect the V88 knock detection. I'm soon to be in the process of wiring a knock sensor to a V88 that has the DI5 pull-up enabled. Also, can the V88 handle knock sensors with a differential output, connecting knock 1 to the knock sensor +ve & knock 2 connecting to the knock sensor -ve? would be good for rejection of electrical interference.
Many thanks