what is the proper jet for a warrior that has a dmc exhaust and a K&N air filter

 

There is no "right" answer to that question, it's not a science. There's variables like temperature and altitude, and every machine will act just a little differently. You'll just have to try a few sizes and see what works out best. I'd start out with 147.5 or 150 main and drop the clip a notch on the needle, but that could be way off depending on your variables.