Review on 🔥 Borla 40349 Metallic Muffler: Enhanced Performance and Durability by Brian West

Replaced the 40 Series Flowmaster that was in my truck when I bought it. The 40 series had good tone at lower rpm but made a crappy noise when air was forced through a too small hole above 3,000 rpm. Thanks for that chamber design. I took it to a local shop, cut it up and welded it together with Borla. Even in the same configuration with shifters, it's surprisingly quiet. Very soft inside and you can really hear the full sound of the engine at all revs. Has a nice deep throaty sound on the outside. The long pipe heads and lack of crampons would have opened it up a bit more, but it's the quietest silencer you can get.