Flowmaster news

Ray Flugger, founder of Flowmaster performance exhaust, had much technological advancement and perfected the chambered muffler design.

According to Flugger, “It all started when I realized that there had been virtually no new technology developed for exhaust since just after World War II. We knew open exhaust changed performance but no one could pinpoint quite what was happening or really whether it was a plus or minus situation. I started to figure out just what went on inside the exhaust system and discovered there was a lot of interaction happening.”
Flugger then concentrated on the existing muffler design and found that almost all the designs inhibited exhaust flow. “I remember testing traditional glass-pack mufflers and found they restricted flow yet produced a pleasing rounded frequencies I wanted. That got me thinking about how I could design a muffler that could improve flow and create a great sound.”

He then researched further until he came across an old motorcycle magazine discussing the “the impact of exhaust flow on headers and confirmed how the exhaust pulse involved sound, heat and airflow.”

This newly confirmed fact only made him realize that in order to improve time horsepower and torque, combining valve overlap, head designs, tubular structure and muffler design are needed.
A lot of trial and error went to his designs until it became the Flowmaster-chambered mufflers known today.
According to Flugger “I could feel it in my bones that I finally had the engineering concept right! I knew that I needed to perfect it, and that’s what we did over the next ten years!”
Source: flowmastermufflers.com