You guys suck now I want a set. $2999 is a bit pricey with cats. Anyone who has these installed please chime in. Looking for some experience with the catalyst version.
2013 BMW Alpina B7x SWB Alpina Blue
2013 BMW M6 Coupe Brilliant White Met. Akrapovic Evo full titanium, AMS Alpha DPs, Gruppe M intake, HRE S101s 20s, full BMW M perf parts, comp springs sway bars, awaiting Dinan, 630hp 570lb/ft