Originally Posted by whitneyd
You can hold load on an engine dyno and keep it there for longer periods of time for a more precise map so why would you have to then tweak it on the road? In my thinking it should already be set up to perfection.

Sounds about right, but Mark spends ages in my car ,writing his memoirs
on his laptop, muttering something about improvements to part throttle openings etc. Can only say it must be hard to improve something that is perfect.
Rod