Better get in here I s'pose.

Andy's got it right of course saying that every mod should be jet tested. Better safe than seized. Rich motors fould plugs and that ain't a big problem.

We've found that TYGA's thrown on a totally stock NSR generally don't need a jet change. This is probably because in stock mode the NSR's already sucking as much air as is possible because of the little pea shooter holes in the airbox. Always worth checking though.

Make any other mods such as airbox or ignition and you will need to rejet.

Weather conditions and altitude make huge differences to carb settings, so don't expect my settings to be perfect for you, unless you live next door.

Remember. Cold weather or high pressure needs a richer setting than a hot day in summer with low pressure.

The boys here laugh constantly when we go Super Motard testing. There's only me running a real bike (CR500AF). Everyone else is on boilers, and they're always very quick to point out clouds and changes of wind direction 'cos they know I'll be back in the pits juggling the brass.

S'funny......last year riding the boiler saw about 3 carb settings throughout the season, whereas on the 500 I'm changing settings three times a session. A bit of a headache, but it's going well enough now to p**s everyone off, and I'm getting bored of hearing that 500 strokers should be banned from the open class.

Rrrrrrrrrrrrring ding ding