Muffler Mods and Increased Decibels???

[FergusonTO35]

My MS-250 is the loudest in my fleet, even more than my ported Echo 500. Only mod I did was open up the fishgill slots on the muffler a little bit so hot exhaust wasn't blowing on plastic.

 

[dangerousatom]

Wondering if welding a 90 inside the muffler box but shooting it straight out would cover all the bases.
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[Stump Shot]

Side Ports are Loud, but not as Bad as direct inline with exhaust port...

More like, can be loud, if the hole is past the deflectors edge. If kept well within they are quite manageable.