I used it to calculate the jet size I needed after installing TORs. Now I ain't no techy but Pat's calculator said I should use 123.5 mains. After the tune I had done at the dealer I asked what size mains he put in. "124" was the answer. "Well," I said... "that's pretty much what I figured should go in there," and I walked away making it seem as though I really knew what I was talking about.
