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What are the Resonators in there for? Just noise reduction? Can they be removed & still legal for warranty? Just picked up a brand new 2016 F350 & would love to hear some sound out of her!!
Legality depends on the State/County you reside in...when it comes time for inspection, in addition to emissions testing (large cities), some measure decibels.
But it's not hard to find inspection shops that prefer cash transactions