Warmest regards from Tajikistan!
Regarding that video it is in Russia. The black one M5 is stock, the blue one just without cat's but the E63 is pretty tuned!
If the PP-Performance will done with tune they should show the video with compares! As I know that no one company can't hack the software of F-series yet...
P.S: Mercedes with his new E63 AMG 4 matik will kill M5 cuz there many tunes for E63 but no for ///M