ECU or ICU. . . . "That is the question" . .NEED A LIL HELP
i have a standing offer for a 2003 YZF600r for a grand. im pretty sure that im going to get it but it either has a bad ecu or icu. the owner said that he cant figure out which one it is and that hes not messin with it anymore. thats why he dropped the price so low. but how can i go about figuring out which one it is without having to buy both and go purely on trial and error? he said that he already changed the coil so it has to be one or the other.