Great choice! I am running one with my Dinan muffler and LOVE it... Very noticeable difference and no pesky CEL lights, etc... They rarely come up used for sale and when they do, they are gone in less than one day. I have only seen 2 in the past year IIRC.
2011 E92 M3 ZCP | EVOLVE Tune | HRE R43 | B&G Sport Springs | Dinan Axle-Back & Intake | Challenge Street X-Pipe | 3D Design Pedals | IND Tri-Stitched Shift/Brake Boots | IND Cosmetics | GTS Door Sills | Euro Sunvisors