Mine has had the same problem since I got it. Ive replaced the CAT, cleaned the injectors, and changed most of the sensors. At this point I am not sure if the gear ratio is entirely behind my lack of power. To give an idea, up the mountain passes, 3rd gear at about 45 mph (65mph zone) is my only hope, if I shift to 4th it just bogs down.
Is this normal, or do I have some other problems, ideas???
Thanks.James