Conversation Between Tugly and ranagent

When it comes to the EGT gauges, I don't mess around with shortcuts - they are very picky. I bought a second ISSPRO EV2 gauge to match the first one I had, then I made sure I set the probe precisely the same way I did the first one.

Hey I keep on seeing you mention a dual egt gauge, but can't find anywhere that you have detailed that nugget. I have an autometer pyro, looks like I can get another probe pretty easily. I've read of some using a switch, but also reading that you can mess up the accuracy of the gauge by adding or subtracting wire from the leads, or by adding a switch. Is there a way to do this with minimal loss, and know with certainty that the gauge isn't showing 200 degrees low or something?
Thanks
Jeff