I changed ic pump on the E55 today the new unit is the bosch 10. Car now feels a whole lot more responsive, to be honest i find it difficult keeping the rear end from dancing when setting of quickly ( any ideas on keeping the rear from spinning) im yet to try it with traction off!!!. But anyway, fitting the pump was a breeze thanks to savman for the advice. All in all it took around 30 mins start to finish. Im wondering what this is going to be like after pulley n remap. I may driveca couple of days and then bleed system again.