The mass M5 owner opts for the SuperSprint X-pipe but has anyone tried a H-Pipe on their exhaust system?
"An H pipe gets its name because there is a piece of pipe that connects each side of the pipe that connects to the header collectors (hence the name H pipe). This pipe is supposed to help equalize the pressure and thereby create a better scavenging effect. An X pipe however, has each side of the pipe meet in an X type junction. Again the idea is to equalize pressure and create better scavenging. As a general rule, H pipes allow for more low-end torque and slightly less Horse Power than X pipes do. Also, the sound note is quite different. The X pipe has a raspy sound while the H pipe is more “muscle car” sounding. As mentioned, the mid-pipe choice seems to be a personal sound preference and most people who use chambered mufflers opt for the H pipe, while the straight through users tend to choose the X pipe. Typically, the X pipe/straight through muffler combination yields higher HP and lower torque than the H pipe/chambered muffler design. "
"An H pipe gets its name because there is a piece of pipe that connects each side of the pipe that connects to the header collectors (hence the name H pipe). This pipe is supposed to help equalize the pressure and thereby create a better scavenging effect. An X pipe however, has each side of the pipe meet in an X type junction. Again the idea is to equalize pressure and create better scavenging. As a general rule, H pipes allow for more low-end torque and slightly less Horse Power than X pipes do. Also, the sound note is quite different. The X pipe has a raspy sound while the H pipe is more “muscle car” sounding. As mentioned, the mid-pipe choice seems to be a personal sound preference and most people who use chambered mufflers opt for the H pipe, while the straight through users tend to choose the X pipe. Typically, the X pipe/straight through muffler combination yields higher HP and lower torque than the H pipe/chambered muffler design. "