I'm going to be putting on a tecnigas next r exhaust on my 2012 tomos lx, and at the same time, upjet.
What size should I replace the main jet with? I noticed on this spreadsheet there are a lot of varying sizes:
So I don't want to go too high or too low. I only plan on doing intake/exhaust mods at the moment, so I'm not sure where I need to be.