I had the bike on the dyno today...
No doubt, the Kawi springs induced a transient lean condition just off idle...you could clearly see it on the a/f...that said, they improved throttle response overall. On the whole, the benefits outweigh the lean spike.
As it turns out what works best with the Kawi springs
in my bike are 152.5 mains, 42 pilots, stock needles with 2 shims, & pilot screws 2 turns out...
On the road (dry with temps around 40F) the bike feels good with that setup & I don't feel the relative lean spike at 2300 RPM with that setup.
The a/f ratio flutters mostly from 12.8 to 13.2 between idle & 4250 RPM (with 2 lean spikes to 14.2 @ 2300 & 13.9 @ 4000); then clusters about 13.2 to 13.4 from 4250 RPM to 6400 RPM, & then down to about 12.6 to 12.8 to redline.
The 160, 158, & 155 mains were more than needed for this combo. So much for the butt dyno...
