Adds about 1-2hp and enhanced torque above stock carb and it is gas combination adjustable. The 22mm is the right option In case you are working stock valves Get started your getaway shopping these days to ensure that you get what you want for the holiday time! All Black Friday https://paxtonfvhvf.blogginaway.com/35745754/the-smart-trick-of-predator-212-ghost-turbo-kit-that-no-one-is-discussing