In this video, Chief Marketing Officer Nate Shelton explains the different mufflers offered from Flowmaster and the technology behind them!

 

kinda bias and doesn't state all the facts.

 

Cutting a muffler in half and explaining how it works is biased? The facts are literally laid out on the table in this video.

 

"most of these mufflers with a simple perforated tube also create a grate deal a of drone with in the car" - False my 18" dose not drone not at any bit in the rpm band. i barely can even her it driving unless im on the gas.

Flowmaster Muffler Comparison - YouTube

"a lot of our competitors try to make this look a lot more high tech(while fondling the polished magnaflow, not to mention they make a cheaper non polished one) how ever in a very short period of time that high luster materiel looks like this ( brings up and older magnaflow with no shine) - people buy the shiny **** to put on there show cars/trucks for looks. us common folk buy the non polished one to save money and don't care because its under the car and the only people that see it will be me or some one else working on the car. so this point in the vid makes no judgement other then looks.
Flowmaster Muffler Comparison - YouTube

"the power chamber creates a low pressure area within the muffler and actually slows the exhaust gasses down - why the hell do you want to slow the gas gown when your trying to get it out of the pipe?
Flowmaster Muffler Comparison - YouTube

"so as you can see our competitors continue to use 50 year old technology, where we are always pushing the envelope with deltaflow...." - lol and how old is your flow 40 design?
http://youtu.be/oVoaJmpoF-E?t=3m41s

 

All of the questions or concerns that you have listed are answered directly in the video.