I just dumped my 87 sct canned tune for my MPT tune that came. Talking about waking the Beast! I didnt really stay in the skinny pedal hard because i want to data log, but wow.... I can tell how much more power there is and in light throttle the truck up shifts faster than the sct tune. With my 275/65/20 toyo at2's my mpg was down to 12ish. I partially blamed the sct tune for holding gears under easy throttle, low rpm, driving. Maybe that will rise now. If not, oh well....lol. Im gonna data log it, then do the same on my other 4 MPT tunes. As of now, im highly satisfied....