Nop it's CMPro yak-54.. as know "heavy weight yak"
it's fly great, i love it.... but now i'm using around 8500 RPM, but i want more power.. can i go up to 9200 RPM with 16x8 Prop??
and another question, this Fule-Pump you using.. giving you any diffrent?
my engine working amazing.. i don't see it needed.... why you using it?