I've noticed that whenever the truck reads 100F+ outside, the engine only puts out (what feels like) 60-70% power and the clutched fan is 100%. So say if you were taking off (even half throttle, but definitely noticeable at WOT) from a stop on a hot summer day, there is a definite power loss, and the truck is noisy (the 'blowing' sound from the fan) as hell.
other times when it's not that hot the truck is fine. anyone else have that? i swear i read in here somewhere that a bully dog can correct that (although not exactly advisable apparently). it's not that the truck is overheating, the gauges show normal (slightly less than 1/2) temperatures.
this happen to any one else? help finding that other thread with that info would be appreciated too (i'm still looking, just can't seem to put in the right keywords)