13-12-2009, 08:00 AM
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Join Date: Mar 2006
Location: 6056 and 4000
Posts: 1,814
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Searching for "Exhaust volume" found me this:
http://www.perth-wrx.com/vb/showthre...exhaust+volume
As is mentioned in that thread, look into "varex" adjustable mufflers.
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