1- bigger motors go through more fuel
2- race motors, like Picos, go through even more fuel
3- race motors require more constant tuning
4- every motor, even within the same manufacturer and type, tunes (or holds a tune) differently
5- there is no such thing as an easy-to-tune, or easier-to-tune, motor
6- ALL nitro motors should be tuned every time you run them.
7- if you don't like tuning, you should have gone electric