Hi Gav
The main point in having the base and idle (btw you wrote base but meant idle
) TPS by the book is to make maps interchangable. If you would produce a perfect map using 100 there would not be ANY other disadvantage than that anyone wanting to use your map must know it's produced for 100 (approx 500 mV).
The InjAdv formula is a bit complex. For each cell it needs the pulsewidth (including dead time, or about half of the latter, or...) and rpm as input. We need to know how many degrees the crank will rotate during the pulse. I have a crude spreadsheet that does all this in a couple of steps. Maybe I can produce a specific example some time. Note that I don't have much evidence it was even worth the effort
We discussed it in a thread somewhere (maybe most of it was in the v11lemans.com megathread). I did try the opposite (late injection) which is much easier to do: Just enter 150 or something in the whole map - but that was significantly worse than the default of 525 or 600.
When I enrichened the idle cell not much happened immediately - the difference lies in stability. Before I realized that, I always set it too lean because you don't notice the difference until it stalls at a redlight.
I think I started with bleeders a half turn or maybe one turn out. I do recall I wanted to close rather than open - so instead of opening one side I close the other. Two turns out tend to produce a terrible whistling noise on my bike.