Well we picked up a 5EFE ECU from a breaking Paseo today. It fitted straight in to my brothers NA Starlet and the car runs prefectly. Took it for a little drive, rev limit feels the same to him. Performance wise we actually don't know whether its improved. Its nothing major though because we would have felt it if it was. The way to find out is by putting up against mine but obviously that can't be done yet! (I bet I could smoke his arse though! )