Since this is not a performance mod I'll post it here. I wanted an F30 328i look so I purchased a galvanized Y-pipe, two (6" long x 2.5" diameter, rolled, tips) from the local Holley store. FYI: Bowling Green KY is hot rod central. Home of Holley Performance, the Corvette Assembly Plant, NCM, NCMP, LS fest, and much more ... But I digress... I sprayed high temp matte paint on the ID of the tips, MIG welded all three components together (1/2" offset, dual tips), drilled 1/8" drain holes, and trimmed the valance a bit. Then I took the completed tailpipe assembly to my local exhaust shop (Mark Muffler) where they cut off the pipe from the OEM muffler, fab'd up a connection pipe, welded the assembly that I brought them, sandblasted the connection pipe and y-pipe, welded on a hanger that connected the tailpipe to the rear OEM exhaust hanger bracket, and then coated the connection pipe and y-pipe with more high temp matte paint for corrosion protection.
I did this because the factory tailpipe looked weak AF, and paying $500+ for a cat-back, that yielded no power, was absurd. $100 for parts, 2 hours of personal labor, and $100 for paid labor. Great deal and look IMO. Plus, I haven't found an aftermarket exhaust that replicates this look. The ZZP DP yields the flow I need for the BNR tune on 20+psi, and the Holley tips give it the look that it needs for a 15.0, 1/4mile. No sound compromised
Like, as they were installing, step-by-step? That would be a negative sir... I fab'd it up a couple weeks ago for the COTM thread. I can take a pic of the finished setup though. It's hella simple. The only reason I didn't finish it up completely is because I do not own a pipe bender, nor do I know how to use one. The tailpipe welding was completed at work as a "gov't job" because I do not own a MIG welder either lol.Have you any pictures of the fabrication? Or maybe a shot from underneath? Loookin' Goood Lucy!