Some motorcycles have electric motors controlling valves in there exhaust systems that let more exhaust out or less depending on RPM.
So yes , to a point a gate valve will work.Is it practical????
Now these engines are making 160 -170 HP per liter.
What other thing could be going on here when adding or subtracting there disc's?
Back pressure???? More ,less? Magic??
Don't forget, you still need some type of muffler, & that is what Supertrapps do also sound deadning.
