Hi Andrew,
Since the motor is still dead stock, the only difference I have noticed, is that it has just a little more torque, the reason I know this is that were I like there is a hill, that when I drive up it in 4th at 60ks, about 2/3 the way up it, I need to go back to 3rd, or it drops back to 50ks, but with MS It sits at 60 all the way, I know, not a lot better for the expense.
But When I bolt on my turbo (the reason I brought MS), I will be able to keep the AFR where it needs to be, and not lean out.
http://noddle.110mb.com/Turbo%20Upgrade/index.html
But my next step is to install EDIS, so I can control spark (my dissy's vacuum advanced is stuffed)
http://noddle.110mb.com/EDIS/index.html
Still have lots of little projects on the go.
Nigel