Hi Thomas.

I purchase my Craz on 7/1/2016 and have had this problem since new:

"First issue:
The left hand Wave was not working anymore. We needed to completly power of the boat and get it on again. Kind of a new calibration or something like that.
Does someone had the same problem?"

We only wakesurf behind our Craz and it does this at least once every time we surf. I brought it in in to the dealership to have the surf system checked in 7/2016 or 8/2016 and they didn't find anything wrong. I will have to take my boat to the dealership in 5/2017 to have the system tested again after I get it out of storage, so I'm curious to see if any other Craz owners have found a solution to this problem.

Regarding wave size, I have found that I need to surf about 1mph faster on the right side to get a good wave. You could try increasing the boat speed to see if that helps.

Catman. Did the dealer replace the ecu in your boat or did it just need to be reprogrammed?