I got an Lm1 a few yrs ago...its so difineative.
you will know immeditealy what your change did.
You can nail down a base line then move from it in any direction....
You especially can confirm what direction the change made..and by how much.
I ended up making quite a few changes from what," i thought should have been a good %"..
It gave good seat of the pants drivebility, I could have stopped right there..
but,, on track i found better et and mph...with a few additional changes...this was contrary to what i thought was good..
For my situation the car liked to be a little richer out of the hole and it showed in a better 60ft.
Anyway,you confirm and or move back if it doesnt relate to the time slip.
you can also find some funny things that make the car et..and lauch better..
you log the data...it takes soooOO much frustration out...
i love it...
i also love drive shaft speed and the data logging of shift points...and over lapping graphs from one pass to another...
but thats another story.
chepast