Hi everyone,
Been doing some research on the Yamaha 2.8L and 4.2L offerings, and it seems all the internals are identical on both engines regardless of HP rating, save for the ECU part numbers.
Would it be possible to convert, say, a VMax SHO 2.8L 150 to a 200 by installing just the F200 ECU or a VMax SHO 4.2L 200 to a 250 or even 300 by installing just the respective higher HP ECU?
I know some minor things like the rev limited would change from 6200 to 6000 RPM, but would it theoretically be this easy?
Been doing some research on the Yamaha 2.8L and 4.2L offerings, and it seems all the internals are identical on both engines regardless of HP rating, save for the ECU part numbers.
Would it be possible to convert, say, a VMax SHO 2.8L 150 to a 200 by installing just the F200 ECU or a VMax SHO 4.2L 200 to a 250 or even 300 by installing just the respective higher HP ECU?
I know some minor things like the rev limited would change from 6200 to 6000 RPM, but would it theoretically be this easy?