Ninja 250R - Shimming needles

[meowmix]

You think?
I needed one shim for each needle on both my VFR750 and VTR1000, both of which had modified airfilters and zorsts. Generally, many/most bikes are set up a bit rich anyway from the factory, so raising the needle a tad (metric, of course) is all that's required. YMMV...

Might be different with recent emissions rules, making manufacturers lean out the mixtures as much as is safe? I know my 04 Hyo (Its built by engineers in Korea, not farmers in China) was set up pretty lean from factory. I put pods on with a straight through and did a WOT plug chop with 1 size up pilots and 2/3 up mains and the plug was still bleached white. Then nursed my way home and took off the zorst and went back to a modified airbox to get it nice again.

I guess the best option would be to take it in small reversible steps and check the plug colour as you go.

[brendonjw]

I've bought a jet kit and a new K&N filter for my GPX250, will let you know how it goes.

Have you fitted the new filter and kit yet Slyer?

[Slyer]

At the moment my bike is stripped down while I ready it for the powdercoaters.
Work is decidedly slow seeing as I'm doing work on my car too. >.<
Ask me in a few weeks.