Contour Enthusiasts Group Archives Forums General General Home Dyno that actually works

I found this today and thought it was cool as hell. You use an inductive lead from a timing light, solder it to a microphone jack, hook it up to a spark plug and record it. Convert it to a wave file, plug in a few variables into this guy's software, and it can take that sound file, with the data, to calculate horespower.

Home Dyno

-Chris

Three years ago, when this was first posted to the mailing list, he offered a discount of 1% per person, up to 25%.

Hopefully there is a variable to change for wasted-spark ignitions like ours. Otherwise you would need to have it say it is a three cylinder engine that spins twice as fast. (plugs fire twice per cycle)