They recon each extra click you give the box adds another 10bhp.
I found the best setting was another 3 clicks. I was somewhere around or just over 200bhp I would think. Running the car without it was like going from a 2ltr and then driving a 1.2. regardless of the fuel saving it just made driving it so much better.
Hi Grumps thanks for the reply, just wanted to double check that it is compatible with my car but looking at your first post it should be as yours was the 163 engine.
What's the best way to pay you?