Originally Posted by dinan540
Any reason why you didn't just upgrade the car? I just started kicking around the idea of forced induction in the future. But then, I wonder if I should just buy an E39 M5 in the future because of the cost of S/C or a Turbo in my 540.
i believe you can buy a vf supercharger for your car for $4500 that will make more power than the m5.