02 durango rt fresh tune up clean throttle body and iac and tps and new o2 sensors ... i cant get the rpms past 3500 in driveand flooring it the rpms move slow is that normal ? in park i can rev high just seems like its lacking some power i feel my 4.7 is way faster of the line any ideas ?

 

5.9l or 5.2l? I heard that the 5.9l don't like the high altitude much. You could try running some Seafoam through it to clean the gunk and carbon out from years of idling and driving slow.

 

its the 5.9 im in michigan not much altitude here ... i ran the seafoam 2 tanks ago no change

 

check your fuel pressure, i think it needs to be at or above 50psi, if its lower than that the pump could be going out

 

On the 5.9 the fuel pressure can be as low as 45 without a problem.
Was this a problem prior to the tune up? Did you change out cap, rotor, wires and plugs? May seem like a dumb question, but did you change out the air filter? Any type of restricted air flow can cause delayed throttle response. Also, make sure there isn't anything restricting the movement of your throttle cables.