Ordered my XC2 tuner today from Bob and am looking forward to trying it out! He sent me a dyno sheet of a 2.3 Ranger in which they pulled 20 ft-lbs of torque and 14 hp at the rear wheels using an 87 octane tune (those aren't PEAK numbers). Peak difference on the Ranger was only about a 5hp / 5ft-lb torque gain. But the sheet showed a very nice increase in torque at low rpm's (almost 30 ft-lbs more at the start of the dyno pull at 2400 rpm with the 87 tune). The gains are around 20 ft-lbs until the engine reaches the higher rpm range and then the difference is not as great. He hasn't put a Fusion on the dyno but he is confident that he can provide exactly the right calibration for my car. I ordered mine with 87, 91, and 93 octane programs. I will hopefully have it loaded by the end of the week and be able to provide feedback. I wanted something that could provide at least a 10% increase in torque, especially down low, and it seems like this is most economical and best way to go.