I went to Kil-Kare dragway and ran a 12.249 at 111.38. The truck also went a best 60' of 1.668 and a 7.852 at 88.78 in the 1/8. Now the problem is it defuels hard in high gear! I think it is defueling hard at the top of each gear but it is really bad in 5th. You can feel the truck lay over hard! It's in the mass air setting I think. It sets the code and then you can feel it go soft. I didn't get a chance to data log anything but i'm pretty sure it is in the mass air. I pulled the headlight and filter out and it slowed down to 105.34 but run 90 mph in the 1/8. The other pass it only ran 88.78 in the 1/8. What do I need to set the mass air to so it doesn't go fubar on me? I think I'm on to something if I can keep it fueling. Thanks Jeff