Heres my Velox with the K80E I have been flying the combo over the weekend and it has been performing well. Power is good and the only problem I had was during one flight with a flameout after performing a slow roll, this was traced back to air bubbles in the fuel line due to UAT not being correctly purged, once UAT was void of air bubbles the K80E performed 100% reliably on following flights.. I still have not yet had time to play around with the diesel or stock factory set parameters, acceleration and deceleration are fine as is for flying I have found and the auto start cycle to stable idle rpm is rather quick still, which is nice. In the Velox the K80E is about perfect with speed in the 150mph range. Iam liking this little engine more and more.....