If I recall, Borla makes a cat back muffler for the Matrix/Vibe and historically they have more sound but are not fart can loud. TRD would be the next best thing. They are easy to install and will give you the sound without sacrificing your sanity on the highway.
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Thx NoCO2; "The biggest FE mod you can make is to adjust the nut behind the wheel"
I am a precisional instrument of speed and aeromatics
If your knees bent in the opposite direction......what would a chair look like???
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