Those turbines had major growing pains. I wouldn't buy it unless it was updated. You have to send pump, ECU and turbine in for software updates. Two of my buddies had multiple flame-outs because of the RX. One of them pretty much ruined an airframe because of it, if it wasn't a CARF flash (tank) it would have been gone. Get the serial number and call dreamworks to see if they will update it for you.