14th Dec 11 Hi Andrew, We have just changed our Volvo XC70 D5 for a new one (215bhp engine) and no longer need our tuning kit which we took off our car before we PX’d it. Whilst we had the unit on the car it worked really well and we managed to achieve fuel consumption of 44mpg at one point, although not I hasten to add when towing the caravan! We did find the unit also improved the towing figures as well though. When we originally bought our XC70 consumption was only 34mpg so the unit improved fuel consumption considerably. Regards, Noel Hughes