STAINTUNE
exhausts feature a polish that is unmatched in the industry. They
really do have to be seen to be appreciated. Their pipes also
feature a removable sound restrictor in almost every muffler they
produce (when the design allows). This restrictor allows you to
adjust the sound levels to your liking. The photo below shows
what the restrictor looks like in the muffler and also what the
restrictor looks like when removed. You can see the little set
screw on the underside. Visit Staintune's website (link above)
for more info and pictures of their systems.
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Removable sound core