Four CRT MotoGP teams already have decided to use the spec electronic control unit available starting in the 2013 season, MotoGP Director of Technology Corrado Cecchinelli said to Italian media.

The Ioda, Forward, Avintia and Paul Bird ART bikes all will use the spec Magneti Marelli unit, Cecchinelli said.

"This unit, the cost of which is around 50-100 thousand Euros, is already better than what Ducati and Yamaha have, and in 2014 and there will be a derivative of this version," Cecchinelli said.

Spec ECU's and dataloggers will be mandatory from 2014. But factory teams can use in-house electronics and software if they run on 20 liters of fuel, instead of 24, during each race. Another price for factories to pay for keeping proprietary black boxes is the use of only five engines per season. Teams that adopt the spec ECU will have 12 engines per season.