10/23/13 6900rpm 19x8 wood Hawk Prop www.hawkmodel.com 87 octane Hi 1-5/8 Lo 7/8 100:1 Amsoil 96db at 6' from side of plane. 102 db at 2' stock muffer over thin carpet. 50' above sea level. 71 deg F. Hall sensor is set at center of adjust range. Forgot to take cylinder head temp but I was getting max of 240F full throttle plane held on ground during first run after cleaning piston ring slot and ring. I would be surprised if engine got too hot as I often rechecked needles and have cowl properly baffled/blocked off to maintain good air flow. Exit hole is at least twice as big as inlet. Also I was running an 18x8 for the majority of the break in. Was tacking around 7800 on the 18x8.