Originally Posted by Zaw
Everyone seems to be very happy with Mike's tune and I'm tempted too. I keep asking my self why doesn't BMW do this "tune" from the factory? Is there better flexibility, durability, or stability with the factory tune? I do want my car to be smoother and more powerful but what will I be missing?
The factory has to essentially make a one-tune-fits-all program. By going custom, you can take into account the variables that are present where you live, the gas you use and the mods you have.