nice...looking forward to your dyno numbers....
if the gtc was around when i was in the market for an exhaust I might have gone that route as well...as it seems like it's a good DD exhaust, especially when compared with the GTM and GT RPI systems....
2016 F80 M3 AW | Cloth/Leather: Carbonstructure Anthracite/Black Seats | CF trim | M-DCT |Adaptive M suspension | 19" Silver 437M wheels | CF Roof | Pics/Mods
Sold: 2011.5 E90 M3 AW l Black Novillo Leather | Carbon Fiber Leather Trim | ZCP | ZP2 | M-DCT | Navigation | Moonroof | 6FL l Pics/Mods
Retired: 2008 535i l AW l Black Dakota Leather l Bamboo Anthracite l ZPP l ZSP l 6FL