
You know how we sometimes complain about how unfair it is to pit a tuned car against one that is 100% stock? Well, when they're all "packing heat", that becomes a non-issue.[...]
Source:
Carscoop
https://www.tuning-links.com/news_4655_Tuned+BMW+M4+Challenges+700HP+Audi+RS7+%26+700HP+Mercedes+C63+AMG.html