Got the Trifecta installed a bit ago and can't "really" tell much of a difference. Buuuuut.... The truck is on 35's with stock gearing, a TON of extra static weight (~900#) and fully loaded for a 9 day camp trip (maybe another few hundred #'s).Really curious about how this turns out for you, my gut says to wait 30k miles and the end of the drive-train warranty before doing something like this but if it's a true night and day difference maybe it's worth the risk to do it early (I'm only at about 5k right now, so I expect 1.5-2 years until warranty ends).
Speedometer is back in sync and the truck feels like it's a bit "lighter" even with all the weight. I'll see how she does on the trip. Gonna be approx 1500 miles.