Left carb, as you're sitting on the bike, feeds the left cylinder. Check the layout of the exhausts... I can't remember if the TYGAs cross over like the OEM MC18 pipes, so the exhaust pulses are on opposite sides?

The power jets aren't electronically controlled. The higher the RPM, the more the "draw" on them, so they are effectively progressive. This is why the HRC kit deletes them, as it's harder to meter fuelling in the high RPM range with a "variable" jet.

Swapping coils/caps makes no difference?

Do you have stock exhausts to try? How old are the TYGAs? There was a very early batch, many years ago, where one side was built incorrectly. StephenRC45 struggled and struggled with his R6K until he measured up the pipe and found a flaw. TYGA replaced it, and all was well again. But as I say, that was just an early batch, and just one pipe. I can't remember which side, but if you bought them second hand, who knows? Really running out of ideas, sorry. It's so difficult when spread out over such a long time, and when the bike's not sat in front of me. With so much going on, I forget what's been tried. (Well, I am getting old!!)


Really, the RC Valves being a little out won't make that much difference. It should still pull well, and into the power band. I am still leaning more towards an ECU issue. I pinned a set of RC Valves open on a friend's R2J in Florida years ago, and it went like a scalded cat! Lots of clutch required, but I couldn't touch him riding another mate's RF900 around the little track we were on!
_________________
Andy.
NSR-WORLD.COM

Please keep all responses to Forum posts on the Forum so that others may benefit.

Please DO NOT PM me for technical advice. My time is precious, and you will probably receive a faster response on the Forum anyway.

Check us out on Facebook! Please "like" our page!