I ASSUME you got icing BS off aviation site..well, its at 10000 ft altitude PLUS, and is AIRCOOLED engine! Waay different to underhood environment..I call BS on LSR MIKE! because I guarantee he reduced intake and underhood air temps, OR someone else did, and that's why he no longer has LSR! BTW I built HP aircraft engines when I was young, so I KNOW icing (and when there cannot be any). Ask poster(s) to show ambient temp needed for icing, (and humidity), and air temps...AIN'T happening, in a car/truck at sea level! (not in my lifetime! so far!)