You don't want to hear it, no one does. I muffler modded my MS192TC-E, richened both H and L screws, tried 4 different bar and chain combos, and it still sucks. Sell it and buy a MS201T, or MS200T, before you devalue the saw by molesting it.
The 192t is what it is out of the box. A muffler mod will only blow out your eardrums. A short bar with .043 picco chain is as good as your gonna get for a mod on this saw. Love mine but I don't expect it to do anything more than light limbing/trimming.
Get a 200t or 201t if you really need to get serious power from a top handle. :msp_smile:
Try the husky t435...better performance, muffler mods help, and you 192t will get you enough on ebay for one of these...here is a vid of a gz3500t which is the same saw but muffler modded.