@dtm0911 dude an rs6 cannot fucking win a race with bmw m5 or m6 ....the bmw isn't chipped and even if it was...the chiptuning doesn't rise a performance bigger than 60 horsepower....chiptuning means resofting the ECU...and more fuel is used in the direct cylinder injection...and increase the tor...
the R8 or RS6 doesn't stand a chance vs bmw m5 or m6 :P