1st May 12 Hi, my box is set to 9 which is how they fitted it. No initial thoughts on trying any higher settings as it’s spot on as it is. I don’t know how you’re finding yours but on accelerating there seemed hardly any response for the first half of the pedal travel, then it would start to pick up. This is really offputting when you pull out to overtake and nothing seems to happen for a split second. The box has completely transformed this. Instant pickup and loads of torque. Changing gear at speed is much smoother as there is no drop off in revs as you change up, when you press the accelerator it responds straight away unlike previously when it would think about it before responding. It hasn’t just smoothed things out, this thing now pulls like a train and goes like a rocket! The power now matches the handling which itself is superb! (Driving sensibly seems to have improved MPG as well). Well chuffed, money very well spent!