bad acceleration, surging

[jasonstitanse]

when i take off wide open, my truck seems to have less acceleration than when i take off at half throttle. at half throttle, it's smooth and powerful. but when i floor it, it seems to have three or four bursts in first gear before shifting. i thought it may not be getting enough fuel, i thought it was poor tuning from the factory, as if each surge was good timing kicking in, or the variable intake runners shortening (if that's what they do). either way it sucks, i just bought the truck, and this does not run like the magazines claim. although it's fine till i really get into it. it may even be ok from a roll at 40-60 but maybe its just not as noticeable.

do you guys experience more of a torque feeling than a top end horsepower pull? maybe this is normal, but i could use some opinions. thanks, jason
04 titan se 29000 miles, ext cab, 2wd, all stock