Just an FYI there is also a resonated Magnaflow Xpipe so you still get the gains of tone difference but not as drastic as the regular "straight X"

They are on the Magnaflow site, I am debating doing one on my X5 5MT because I'd like a touch more sound with my 4.8iS axle back but I heard one with my exhaust and regular Xpipe and it droned on the highway

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2018 Ram 2500 6.7L Cummins 68RFE
19k miles -Bright White/Black - Big Horn Sport - Crew Cab Short Bed
2013 X5 35D (CEO's) - Born on 5/17/2013 -
82k miles - Alpine White/Cinnamon Brown/Premium Pkg, Sport Activity/Premium Pkg and Sound/20" Style 214/Running Boards