Quote:
Originally Posted by NinjaRacer
Now I can see how rich really they are from factory.
Some dyno charts with AFRs of the stock/modified bike would be useful now. I cannot find any.
Actually some mentioned they run 98 and even lower jets. I was really skeptical 
In the end ninjette is not made for power and chasing HP.
Probably richer jets work well on acceleration and HP difference is so small that we don't even notice running rich.
altitue and temp is also big factor. |
Here's before & after dyno-chart of:
blue = bone-stock new-gen 250R, mid-range slightly lean, top-end rich
red +19% = Area P Full exhaust system
green +29% = Area P High-Mount race exhaust system
Running non-stock race bikes can be exercise in frustration, will stumble and pop when you're trying to split through traffic. Really only good at full-throttle above 10K-rpms; not easy to ride like that on street all the time. I would add some washers to needles or spin some custom ones on lathe with thinner middle section.