In 2007 I had an error in judgement and purchased a 2008 GMC Seria. (I know, keep reading).

The damn truck had the 5.3 and would stall out at about 84 MPH so I purchased the BullyDog Gas Triple. I could adjust the shifting, power output, and top speed. It was better but I hated that truck after a couple of months. I bought a new 2009 F-150 a little over a year ago and i haven't even put the BullyDog on the Screw.

Has anyone ever used one on a 5.4 4x4?

Thanks,

Robert