I actually didn't even remove the muffler from the saw. I held the saw so that the muffler was upside down (so any metal chips would fall out as I drilled). I then drilled two 3/16" holes in the flat spot that looks like the natural place to drill. I did hit another layer of metal about 1/4" inside and drilled through that as well. Not sure if it was a baffle or catalyst. Then I removed the carb limiters and tuned to match.2Strokn, I just picked up one of these and am wondering how you approached your muffler mod? It feels heavy like there is a catalyst hiding in there but I can't see it from the entry or exit way. Did you separate the muffler and if so do you just torch that solder/brazing until it liquefies and then pry up the tabs?
Any guidance and/or pics would be appreciated. I've done muff mods before but never had to open the case up all the way.
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