i kept my stock tail pipes and went 3" from cats in to a 3" IN, 2.5" dual out Flowmaster 50 series Delta Flow. Those long tunnels in Boston are fun at full throttle.
I'm running a 2.5" cherrybomb glasspack, but it's not quite loud enough for me. It's a deep rumble with that glasspack pop
Nothing... cutting out the mufflers and puttin a pipe in... I'm so excited... i was gonna go to fairbanks and get it done but I'm not that patient... gotta find a place in the valley to do it..
I've got a SI/DO 18" Magnaflow Catback exhaust and I really like it. Sounds loud and mean on startup and when I get on it, and is prettymuch quiet at highway cruising speed w/no drone. Wouldve got that Roush OffRoad like 281Screw has and like I had on my 2007F150, but Roush doesn't make em for the 2010's so went w/the Maggie. But that Roush was badass on my '07! I'd recommend that to anyone who has those model year trucks.