Originally Posted by
JesseT
but to be honest, it's no better than a pair of ears.
I made a small knock sensing circuit once, with a pot on it for sensetivity adjustment, was either too sensetive or never came on. As you say, ears are pretty good, plus we all know roughly where the timing should be. The hole in my bulkhead for my ecu wiring has no been sealed yet, and acts as a good transmitter of engine sound
