Scooterotica

Just fitted an M-tech and am happy with it after a bit of fettling to the stator .
My question is why does it affect the slow running jetting so much . I had to go down a size on my PWK pilot jet to get the mixture screw to have any effect at all ?
I`m not the brightest about the in depth technicalities of how timing affects jetting ?
I went up a main jet one size and down a pilot jet one.
Just like to understand it really

Probably would depend on which ignition curve you selected, some retard a little, then advance a lot and then retard a lot. That is bound to affect the way that the fuel is burnt at different points in the rev range.

It retards now from 23 all the way down to 16 now . Setting number 8 on the box .
So it burns less fuel as its more advanced ...or at least burns it more efficiently and therefore requires less. ? Is that right ?

Generally speaking, you'd fuel the advance.


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So I`d seem to have gone a bit arse backwards by a small amount.
I've definitely gone too rich lower down . The dropping of the pilot one size has brought the mixture screw back into range after a turn and it seems fine so I`ll leave it a that and keep plug chopping . tidy