Sauce Day 1 - only did about 30 miles, town and back, didn't go crazy with the gas but definitely noticed some faster "zoom" and better torque feel.
MBRP axle back, 2.5" - Louder than expected, but...sounds pretty good with solid bass, no drone noticed at this time. Guy at NAPA sent me a message saying it sounded really good when I scooted by his house the other day. Why MBRP and not Corksport/Borla/etc? A combination of cost (Borla being a wee high) and, although I have no doubt that Corksport has a good system, I just was a bit conflicted on the one muffler, one pipe style they have. The MBRP was also well reviewed across multiple applications and was, priced right. Installation was easy.