first trip out with the rangerover 2.5 towing my caravan and found it a bit gutless to be honest up the big hill out of chesterfeild very slow and temp gauge hit the red but soon went back to normal when over the top but disapointed .think it need a remap .its an auto and its good on the flat but hills a bit of a joke . so how do i drive it in sport mode hen i come to a hill or just gun it from the bottem of the hill