My quad box is uncontrolled.... I have a quadzilla recon for gauges. My truck does seem to "fall on it's face" in high gear. I have a fuel pressure dummy light thats supposto come on below 7PSI and it comes on as soon as I shift to 3rd if not late in second. My stock lift pump is new. I use the truck for towing mostly and my Daily, never even had it on a real track. I just have a 1/8 and 1/4 mile marked off in front of my parents house on the highway from back when I drag raced in high school. (practice track, the nearest drag strip is 60 miles away, nothing like trailering a car 60 miles to make 1 pass and go home with a problem )

 

Probably just running out of fuel..get a LP and you should certianly feel a difference.

 

Yup! and your egt's will come down as well