Hi Joshua, have you seen any modern saws that didn`t have a muffler? Do you mean a modified muffler for more power?
The new Husky chain that cuts so good is actually an Oregon. If your sharpened chains don`t cut atleast as good as a new chain they aren`t sharpened properly. I hope you aren`t paying the guy who sharpens your chains if they don`t cut as good as a new one, but unfortunately this is a common scenario. A properly filed chain will outcut a factory grind every time. Do your self a favor, get a few files, a guide, and a depth gauge guide and practice, practice, practice. Eventually you will get the hang of it and you wonder why you ever paid someone to butcher your chains with a grinder.
If you have specific filing questions please feel free to ask, there are many expert filers here who will offer advice and like so many other things there is often more than one way to properly skin a cat. Techniques that work for me may not fit you and vice a versa.
Russ