I have a MBRP 4 inch system on my 2016 Ford F150 3.5 ecoboost, System gives great power but is loud as heck. When the original MBRP Muffler split at the seams I decided to give this a try. It's perfect. No raspy ricer whine or drone, It's deep and throaty, and not loud. Doesn't sound like a V8 obviously, but doesn't sound like Ricer Crap either.
Toyota Tundra 2013 Supercrew
Great price, great sound, simple install and performance boost for both mpg's and throttle response combined with cool air intake. Only reason it did not get 5 stars is the u-bolt brackets it came with were undersized for the job. Broke 3 of them way to easily and replaced all 6 with heftier brackets