Just bought an 04 Blaster for my son....Cleaning it up and tuning it for a little more performance

It has a pipe and I am blocking off the injector and adding the Keihin PWK28mm Carb

Any idea where I should be on the main jet?

Thank you

 

Ours has the air box lid removed, 28mm carb, G3 reeds and valve and a pipe, and I have a 132 in it now. I've seen for years all these guys running huge jets in their Blasters, but they have always been way to rich for us. I would start at about a 140 and go from there.