Why does hotdogs make my heart race and i feel high and i know its not my blood pressure cause its low?

Not sure, but......: Well, cannot be sure, but it sounds like you may be allergic to one of the many chemicals in the hot dog. You could test this by buying the fancy non-cured hot dogs (expensive, at fancy grocery stores usually) and see if it still happens. No matter what is causing it, i would avoid any food that does that to me. Good luck.