Quote:
Originally Posted by aceofspadeF13
I have a 2017 m6 convertible competition package. Any one recommend any tuner I get get for it? What does bmw do to make the car "40"' more horsepower with vs one with out it? Why would it show 640 horsepower on my sport gauge?
Thanks for the help guys.
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For tuning you should contact Mission Performance in Socal. They are reliable and have a great rep tuning our cars.
