think i have got a little theory. I could be absoloutely wrong or on the other hand this could be common knowledge and i am really not that clever for pointing it out. Anyway, the main difference between the willy and the 16V is where the power band kicks in. I was always under the impression that this was simply down to the bigger capacity of the willy. After speakin to jon and a couple of others at the clio meet on sat i now reckon that the reason for the willy kicking in at lower revs is down to the diesel crank. The shorter throw in the crank causes it to be able to create power in the lower revs??