Got my box today and installed it in 52 minutes. Instructions are good with a few typos. That also included tapping the exhaust manifold for the egt probe. I did not get the check engine light like others have reported. According to the instructions with a 6spd stock clutch should hold through power and torque level 5. A MONSTOROUS power increase. I'm spoiled as I have a TST box in my 99 and its putting out 600+ hp. Only was able to put 20 miles on truck tonight with the new box on. I tried a couple of combinations and the torque setting can really be felt from 1400 to about 1900 if you just use the torque enhancement and the hp from 2000 up if you use the power settings will push you into the seat. EGT gauge is very accurate but I did not pay much attention to it as I was changing the setting to much. Did I say I love this box. Gotta find a good place to fit the display and check out the egt readings a little more closely tomorrow. I think I will keep the power down for now to save on the clutch till I see what I want to put in.