Originally Posted by m33
Owned 3 M3's one supercharger &140k miles later M hits 10.8 @ 132mph
From car to car the kit started out as a 600hp on an 08 M3 , then went. 625hp on the 2011 M3 , then went 650hp on 2012 M3...
How much more proven do you want it to get
If you are just talking about drag racing...DEs and road courses are a whole other level of abuse. Its like a 1/4 mile run x 120.