I've got a 2 electrics and a gas. On the 240V electric....the turbo will do damage to crete, IMO. I'll try it this weekend with the same turbo tip on the smaller electric. Interesting debate I suppose....just need to see the video to see the technique. Maybe he's using a larger orifice turbo nozzle against the machines gpm/psi, etc. I just can't wrap my head around it re: the recommended use of it though...