Bimmer on Bimmer Crime: 800 HP M6 vs 550 HP M4
12/09/2015 00:46 - admin
Say hello again to this Evotech Stage 2 M6, packing 800 HP and not afraid to use them against a lesser opponent. In this case, a 550 HP Custom Stage 2 BMW M4.[...]

Source: Carscoop
http://www.tuning-links.com/news_4724_Bimmer+on+Bimmer+Crime%3A+800+HP+M6+vs+550+HP+M4.html