What have you guys been seeing for a fuel mileage increase on the full size trucks and SUV's? I have an 01 Yukon XL, 3" lift, 325/60R18's, 3.73's and I am seeing right around 16 now. I haven't done a comparision to the stock cal in a long time, but I thought it was around 14 to start.

Also, i put it on the dyno here at work and got 252 hp and 279lb ft. Not to bad for an intake and cat back.