And love it. Just starting to get with it now as I have 3 flights on it. I broke it in on the ground - about a tank's worth. Mine is still running rich on Omega 5% and APC 10x6 prop. I have the mini-pipe (not that standard silencer) and it easily turns 14,900 rich (300 to 500 rpm off max). I suspect with a bit more run time I will tune it to 15,200 - 15,300 (maybe more) on the ground. It turned a 11x4 APC at 15,300. I suspect it would turn a 9x7 at 15,700 or so. I think the racing version will hit 17k plus, but not this sport version of the engine.

By the way I was testing on a 65 degree day with about 30% humidity. I am at 1,000 ft.

Mines a keeper for sure. It beats all my .46's (when they are on standard silencers).

Mike