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Has anyone put (or considered putting) a custom exhaust on their terrain, specifically a V6 but info on either would be cool.
 

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The 'Y' pipe looks restrictive. It's also a complicated piece. Shields, O2 bung, etc.. And of course, it's stainless steel.
Some cat convertors aren't overly restrictive, and a well tuned muffler can be quiet and still allow good flow.
 
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