Yes please. Is this the same as piston wash jetting?
I do not think so but maybe?
You have to pull your pipes. It is time consuming but if you want it spot on it's the best/easiest way IMO. It's how I jet my race bikes. I'll do my best to explain and try to dig up the article later.
You'll want to do this during your normal riding temp & elevation.
Basically wet line jetting is jetting by your exhaust. What you'll be looking at is the wet line left from your fuel inside of your pipe and how throughly of a burn your getting. What you want is a half moon shape, the half moon shape will be wet.
No half moon shape and grey/carbon is lean.
Completely wet out of sight is rich.
Ideal is a moon shape maybe 2 inchs deep into your pipe.
Does that make sense?
Before you do this you need to;
Pull you air box/pods.
Then make control marks on your throttle for each fuel control, pilot jet/slide cut away 1/8th throttle, needle 1/2 throttle and main jet WFO. Look at your throttle slides and make a mark on your throttle cable off of your thumb throttle at each location.
Then get the machine to operating temp.
Run it at each throttle location lets say for 2 min, you can pull your belt or find a long straight or open field. Stick to the throttle position you are testing, no blips!
After you run it pull the pipe and look down it, then adjust if needed.
Do it again for the remaining controls.
Again what you are looking for is a nice wet black half moon shape, small or no moon is lean and completely wet all the way around rich.
Get the your riding spot early and do this while you wait for you buddies.
If you let the pipes cool too much you will not see the wet line, have good gloves that wont melt.