I ride with some turbo yammy's and to be perfectly honest, our group has waited on last minute wrenching from the yammy crew more than any 2 stroke turbo we ride with. Keep your air/fuel numbers in check and don't try to push the motor to its very outer limits of performance and you will have a reliable, light turbo sled. The yammy's are great as far as being more forgiving with tuning than the 2 smokers but I prefer the 2 stroke turbo power over the 4 stroke turbo power, just a personal preference. My TM800, after the tuning phase, has been pull and go all season.