When I key-off to CODFISH, the Scanguage shows 9999mpg then turns off.
hmmmm i'll have to try that. mine is with engine running... no hills down here to coast for too long though so i just coast up to the red light then key off. on my car i have to put it in park to restart
It's likely just a switch in the shifter mechanism. Find it and you could probably mod it pretty easily so you could start in N (or whatever gear you want... careful!).
I was wrong! i guess i still had car in drive. just went out and tried with shifter in neutral and it started fine.
I have found that i can key off and back on again and S.G 2 still holds current measurements. just have to watch the oposite light so i can be ready to restart when light are changing. but usualy have plenty of time since i'm hardely ever first in line.