Quote:
Originally Posted by dok47
Imola trust me you will love it. it will be deeper but still drivable every day. now I have "supersport" exhaust and it is louder and deeper but with time is really annoying me and I am thinking of going back to stock exhaust and x pipe. especially when I drive long routes.
PS all others worried about fuel economy on V8 engine powered SUV...you are in wroooooong movie...sell your bimmer and get your self some girly prius or vw. No hard feelings...it is for your own good 
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The bottom line is that my X is bad*ss and it would be more likely for me to dump $10K+ into a supercharger for it rather than trade it for a "girly" car.

...however, what I would like to understand is the "true cost" for the improved exhaust sound so that I can determine whether the setup is right for me. If it is going to cost 2+ mpg, then it may not be worth it, especially if there is no other performance benefit.