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10-03-2017, 12:04 PM
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Drives: 2016 Yaris 3 Dr Super White Join Date: Mar 2016
Location: SoFloYo
Posts: 259
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I have a question pertaining to exhaust mods but its in a little different direction. How would performance be affected if you left the primary cat, the resonator, and installed a high flow muffler upstream?
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