10th Apr 07 Hi Andy As promised here is feedback on Black Volvo S80 which we had such fun with a few weeks ago testing the various box options. Anyway after some really varied runs , I and others who drove the car ?pre box? are seriously impressed. I think we got the CRD2 up to its limit and the performance is staggeringly better. The onboard computer is showing excellent mpg but I?ve not bothered to check it against tank measurements because a) life is too short and b) I?m enjoying it so much I don?t really care. Needless to say great value for money ,mpg is more than good and I?ll probably just give you a call for advice when it goes back to main dealer for service in 10k miles. Good luck and thanks for giving me so much time and advice to get the right solution for D5 engine.This is definitely the box to go for after trying green and red first.A veritable flying machine. NB insurance increased by less than ?70 !!!! billy bargain for probably 200+bhp Cheers Rob Townsend