At the moment I have a forge recirculating dump valve which is fairly quiet. I have been told that there are a couple of different options to make it louder. One of them is to block the pipe that recirculates the air but that didn't work as it kept stalling the engine and the revs kept dropping and rising erratically. I have been told that there is a kit to relocate the dump valve to the front of the engine onto the (intake?) pipe that goes to the block? Has anyone done this? Is there a kit and is it easy to do? Any answers greatly appreciated!!