I ran my ‘25 with the plug installed for maybe 500 miles. Removed it and got about 800 miles before I got a CEL. I reinstalled the plug (which still fit pretty snug) and I plan to cobble together an in-between option. I enjoyed the added sound, so I plan to cut a hole in the plug and cover it...
I switched my tires from the factory beadlocks to method 705's (17x8.5, +35, 25.24lbs according to mfgr) and the difference was immediately noticeable. Steering is more responsive, and the truck feels a bit lighter when accelerating or braking. It's not a massive change, but it won't go unnoticed.