You need to send your ECU to Bob Price to have him upgrade it to CO2 spects to be AMA legal in the USA if you want to fly at an AMA field or event.The up grade will add the 2sec delay failsafe engin shut down in case of loss of radio.

. Bob Price RJP Model Products 16333 Breakaway Rd Cedar Park, TX 78613 512-259-9232 1) [email protected]