Banshee,
The DMC is the pipe I was talking about, Alien is what DMC uses for the 4 stroke pipes. They sound sweet and make really good power. I am a dealer and can get you a really good deal if you want a set.
Porting and polishing is really complicated to explain so I will give you a brief overview. By changing the port layout on a 2 stroke, you can dreastically change the powerband of the engine. When I port a cylinder, I use very high tech computer software to help develop my port layout. basically, by raising the exhaust port, you can raise the RPM that the motor makes its power at. The transfer port heights and widths are also very critical. To have a killer motor, it is critical to have the porting, pipes, carbs, head, and intake all tuned for the same target RPM range and the same torque range. If the porting is not done correctly, the motor will make less power and be unridable. This is pretty crude but I would have to type for days to tell yo everything I know about porting. |