I have an LM-1 and it is one of those tools I will never do without.
http://www.innovatemotorsports.com/products/lm1.php
I have been tuning the Transam, the Pantera, and even the Ford 8N tractor. I hooked it up to the tractor after putting the new engine in, warmed up the tractor on a hot day and tuned it while mowing some heavy grass. Aswome Awsome tool! Dyno is fine for jetting but LM-1 is great for working out transitions (and jetting if your not going to dyno). It simply takes the gues work out of what you are doing. Worth every penny.
Gary
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