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Inside the Yamaha’s ECU are three processors, with more than 300 maps managing a huge assortment of functions. You will need to send your ECU to an ECUnleashed authorized dealer for it to be reflashed—you will get your own ECU back rather than an exchange. The actual process takes just a few minutes to upload the new code and maps, but significant modifications are made
Literbike Mods Yamaha R1 ECU Processors