There are plenty of threads out there. My experience with it is that it's a waste of time. When I had my box removed I noticed no power gains and my fuel mileage was always 1-2 mpg lower, all it did was make noise. I eventually went back to stock
Wont argue with that lol. I did like how it cleaned it up but Id rather get better gas mileage. It only takes a few extra minutes to pull the tube when I need the spaceengine bay looks a tad cleaner though