I would like to modify my 2005 GS wih a Jardine exhaust and a K & N lunchbox filter. What jet sizes would be optimal? Thanks.
Well here is a matrix but take it with a grain of salt. It's different for everyone. I have full yoshi system, K&N Lunchbox and I'm running 142.5 mains, 40 non bleeder pilots, zero #4 washers, and pilot screw 2.5 turns out
http://cgi.stanford.edu/~sanjayd/gs500/Upgrades/Rejetting
Same set-up I have ;) I bought a dynojet stage 3 kit though.
Edit: although after trying to install it, I wish I would have just bought jets from Mikuni.
I have a 2005 and am about to install a Jardine and Lunch box.
I'm most likely will be going a 22.5 pilots, 65 mid mains and 145-150 Main*
145 if I care anything about fuel economy and a 150 if I decide I don't.