M5 E60 Group Buy Forum and Sponsor Discussion
Let me start by saying that I'm the tuner for Eurocharged and I daily drive an E60 M5. Secondly, I have more seat time and have spent more time tuning this car than most others. I have road tuned and dyno tuned many M5's to date, and probably have over a 1000 hours of M5 tuning time.
The...