in love with my muffler delete ! when cruising down the highway there is a little bit of drone im not going to lie to ya. It is def not horrible enough to make me want to put a muffler back on. I listen to my base stereo at ( volume @ 18 ) and I cant even hear it other then road noises.
its loud on cold starts like any other truck, but once its warm its significantly quieter.
catch cans are also a great mod for these trucks to prevent oil being circulated back into the engine from the intake. they are well worth the money for the protection they provide.
other mods, all depends on what you have available to spend, or are willing to spend. trust us we can spend your money easily lol hahahahahaha.