I would like to make a quick comment here.

Josh is one of the best in the world at tuning nitro r/c motors. This is the reason he has no need for a temp gun. Also the reason has he no need to change glow plugs.

However, for you guys and myself, we need to use the temp gun and new plugs for reference. My main goal in using the temp gun is to make sure I'm in the ballpark. Especially when bench tuning the motor. Often it's not so easy to audibly hear if you don't have the hi/lo needle combination off a little and the temp gun will help you go in the right direction. Also, tuning can be like building shocks; you may know the correct method but until you see (or in our case hear) someone like Josh do this bench tuning you still won't know how to do it well.

As for the glow plugs, Josh's plug probably never saw the high side of lean so the plugs works great. Ron Atomic uses the same plus for months just like Josh. The problem for us is that we aren't as good at tuning by ear and track feel so the option of "reading" the plug can help us a lot. Many times I don't change plugs because I think my car's performance has fallen off, I change it to be able to read the plug after a few laps. The glow plug in our motors is just like the spark plug in full size race motors. My engine builder (drag car motor) said it best; he told me that the plug is our only window to what what is happening in the combustion chamber. If you can't read a plug accurately in a 1300hp race motor then you will be lost as a goose.

Josh- had a good time chattin with ya at the Nats. Good job on the win. I hope you don't mind me adding my thoughts here- I know that sometimes you guys forget that us rookies don't always know what we're hearing and what to look for like you do.