When I was a kid I took the baffle out of my motorcycle because I thought it would make it go faster.

Now I am more mature (old) and I am taking another look at the exhaust system of motorcycles and what they actually do beside directing exhaust gasses and sounding cool. I am starting to realize that designing an exhaust system is kind of an art. Every part of the bike is like a puzzle that fits together and engineers have designed the exhaust system to go with the motor it is attached to.

The following article comes from "The Essential Guide to Motorcycle Maintenance" by Mark Zimmerman: