Sorry for the late post and short video, but here it is.
It's still not tuned.. The power increase and sound is unbelievable. No Drone at all when cursing around. Love it!!
2013 M6 ZL1.. Mods- Roto-Fab CF Intake, Ported and Polish LS7 TB and Snout, 2.55" Upper Pulley, 100mm Idler Pulley, Solid Isolator, Afco Heat Exchanger with fans, ID850 fuel injectors, SW 2" LT Headers With High Flow Cats, and CMS 91 Octane tune.. 579.8rwhp and 537.4rwtq