Installed all four exhaust gas temperature (EGT) probes this morning. The Dynon-provided probes make this a straightforward task. All that was needed to be done was:
1. Measure along each exhaust pipe to a point between 3 and 8 inches from the cylinder where the pipe is on a straight run. 2. Mark the point with a sharpie. I settled on 6 inches on all 4 pipes in my installation. 3. Drill a 1/8" hole into each pipe ensuring the hole isn't pointed back at the engine in case the probe ever comes loose. 4. Install the probe into the 1/8" hole and secure it with the provided steel hose clamp.
The hardest part was drilling through the steel pipes - each hole took a couple of minutes of straight drilling using moderate pressure, medium speed, and cutting fluid.