Originally Posted by RPiM5
Have you also considered the new Race Precision exhaust system?! It provides the most horsepower gain than any of the three you have listed above.
Didn't know RPI had a exhaust system available for the F10 M5
I'm sure it makes power however to say it provides the most horsepower of the three is pretty bold ...
I would love to see all 4 exhaust systems installed on a stock F10 M5 and see what kind of power each system makes.
(Pretty sure everybody on this forum wants to see that too)