06-10-2013, 02:42 PM
Either like Swampy said swap over the TBs and fuel rail from the '05 to the 03-04 motor. Otherwise you will need the other ECU. '05 is the only year with that fuel tune and the 2mm oversized TBs. 03-04, 06-09 R6s motors run shitty on an '05 ECU. But if you just throw a whole motor in no swapping things around got to have the other ECU. Everything else is the same.