ahardbody, that is a clean looking brace you made! im definately gonna check mine out and see if i can do some thing similar. Nissaneric, well i havent really seen much of mpg increase if any but it really roars around 2000-3000 rpm and then screams up hill at about 4500 rpms. Im really liking the way it sounds though and seems to not have as much hesitation when shifting anymore. But if you do this, i wouldnt plug that little vac hose with anything cause on mine it seemed to not breathe as good and too the roar away. Hope this helps