in light of my recent dyno tune, im curious about something. just how much better will a 2.5" exhaust flow over a 2.25"??
with the same muffler, which would flow better?
-2.25" piping w/no cat
-2.5" w/cat
with the same muffler, which would flow better?
-2.25" piping w/no cat
-2.5" w/cat
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