I took a short trip over the weekend, only 200 miles one way. Naturally it was stinking hot, so the air was on pretty much all the time while cruising at 75 to 80, sometimes a tad over. It used to be that the mileage would drop like a rock with the stock exhaust at that pace. Now, with the 2" custom cat back, 31mpg. If I drove like a normal person, it would probably be closer to 35, but Im not a patient person. After 20k this thing drives better than when it was new. Just almost broke in. What a load of fun. Ive driven 40K + cars, they are nice, but not near as much fun. The MMW header goes on tomorrow, finally! Yea!

 

mine is almost at 90,000 miles and runs great....