I have an RX4 Megane with a reconditioned engine. It has a new turbo unit. In the six months I have been driving it I find it looses power going up hills, often falling to below 60 and having to be put into fourth gear. I feel like I'm thrashing it on the flat at 70 and it has recently started to make a whirring noise linked to accelerator movement. Is it a car that likes a gently drive ? I now the revs are quite high and the diesals are generally noisy. I see very few of the RX4's around. Any one got any experience of driving one to compare with ? I love the driving position and ultra comfy seat but its a poor drive otherwise. 