Well after years of reading about Allen and his tunes I am finally ordering one today. I've had a Wait4me tune when I was mostly stock. Then once I added headers I had a Saint Louis tuner SD tune it. He has done 5 tunes on it as I have added parts. The truck has always ran great except my gas mileage has been 11 mpg. All city driving babying it. I am hoping to feel a difference in my wallet and keep the performance. What do you guys think?