Only have off the car shots for now, on car and dB testing later this weekend. After a day or three, this will get moved to the Parts Review Forum.
Who the hell is Massiv USA?
They are a new NASIOC Vendor and are making a new exhaust. Holler at them via THIS LINK
WARNING....I suck at photography
Looking through the tip down into the main muffler. Notice....100% straight through design. The internal diameter and the diameter throughout this exhaust is 2 and 7/8ths (AKA 3"). The lightish ring around the main hole is the expansion where it goes to the tip, which is 4".
Weld "close-up". It's hard to tell, but even the damn flanges are polished and blingy.
Inside the midpipe portion from engine to tailpipe side. You can see first the internal flex joint followed by the resonator. Once again, 100% straight through design and 2 and 7/8ths (AKA 3") diameter throughout.
Whole midpipe with resonator
Whole muffler section
Close up of flex joint
Close up of piping and muffler welding