ORIGINAL: redfox435cat

not sure, most of us just use a tach and or our ears to tune em and base it off RPM and smoke volume and color.

The temp range setting is for cars. Cars do not have near the airflow and you can't tune them under load properly hence using a temp guage.

If you trying to guage temp to figure out a glow plug heat range you base that off the type of engine and the amount of nitro your running. The more nitro the hotter the plug.