I have the
@MRT Performance trail rated system, as I said in another thread, if you're looking for loud, this is not for you. If you're looking for a subtle noise increase, but a deeper smoother tone, and the valves get removed, this is for you
Modify stock Ram RHO and install an MRT trail-rated mid-pipe. Hear the twin-turbo pops and burbles with a smooth performance tone for daily driving and off-road adventures. Made in the USA.
www.shopmrt.com
Their description on the website is spot on, I can't state it better myself