Street Ryderz
Well-Known Member
The header and first divergent section determine the rate of exhaust flow out of the cylinder and the headers dia and angle of divergent cone control the speed of that flow rate and reduce heat in the cylinder,then the belly allows for a low pressure area where the waves intersect then travel in different directions,the baffle cones (convergent) section determines the magnitude of the return wave with steeper angles being a harder hit,now the time it takes for that wave to exit the cylinder and travel through the pipe to the convergent angle and reflect back to the cylinder is the pipe timing and it's over all length determines where it starts to boost.Belly dia/volume ideally is matched to the displacement,the angles of the opposed cones control the speed and magnitude of the waves while the stinger controls the bleed off of pressure between waves.