Been dragging my feet on posting this issue cuz I'm not sure I want the answer ($$$). 1995 XJS runs fine now, idle issue is kinda fixed. The car shifts quickly through all the gears as it runs up the road. Second gear comes in kinda hard. It will not run up any rpm as it runs through the gears. Like I said, runs fine, but the gears shift rather rapidly and the sport mode switch has no effect.