KM is most likely referring to the fact that for our bikes, the fuel/air mix screw only affects the range of rpm associated with the pilot jet fuel passage (1100~3200). Once past this range, and the main jet phases in via the large diaphram needles, the mixture screw setting no longer matters, and it's just burn it all go time.
P.S. - Some say that the colortune plug is worthless, but I would like to try one anyway sometime for this very purpose.
'91 VN750 - Cosmic Splendor/Candy Wine - 10k mi.
Done: Coastered, .020 ign., Iridiums, VM, Plexistar II, MCCT's
Will Do: MOSFET, Horns, Shave(maybe)
Last edited by ZCraggRatt; 04-29-2011 at 04:18 PM.
Reason: P.S. - Colortune