Join Date: Jun 2009
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I rode in my buddy's 7.3 with stacks, and you can't hardly talk to each other in the cab. But I have a 4" straight pipe and it is super loud with the windows down, but with them up it is just barely louder than the engine noise. Very reasonable.
2013 F-150 CCSB Oxford White FX4 EcoBoost
Loaded with every option...
2008 F-250 CCSB Dark Copper King Ranch 6.4L FX4
4" MBRP Exhaust w/ Muffler (DPF/DOC Delete), Modded Stock Intake, H&S XRT Pro