Check valve engine?!?!?
Ok today I had a new idea. Just like in many two cylinder engines that been around and go extreme RPMS. Use check valves on the intake and exhuast ports, on 4 cylinder modern engines. This is my idea, have the check valve work, so that it makes a one way pipe, so when there is vacume into the engine it alows gas to go in, but at low speeds and there is building up pressure into the engine it wont alow it in. Have the same setup for the exhaust.