I was getting 7550 with the NX prop with 5% coolpower. I also checked my props and it was actually a 20X8 NX. I agree the DA50 is much better off in a larger airframe, but I was never real satisfied with the DPM MOKI. Either way I no longer have the plane or either engine. 100cc was calling my name so had to sell just about everything else to get in the air.