RE: AE .15 vs OS .18 CV-RX...Which is better?
That Dyno sheet of the OS CV-R is most likely a modded internals because mostly engine modding companys own dynos and they give that sheet to the engines owner after their done modding it.
Guys theres a difference between BHP (brake horsepower) and HP(horsepower) so keep that in mind when looking at engine specs.
All race .12's produce 42,000RPM's+ because they dont have a starting unit/pullstart that adds into rotating mass. Generally if you have a bump start engine youll have around 4-5000rpm more