Originally Posted by
killerbee
The whole point of variable geometry, is MAP governed boost. Without the ability to regulate it, there is no point in even having a map sensor. For that matter, you may as well just throw on a wastegate. At this point, that is what is called for, unless there is a way to cap boost production.
As far as final say on vain position, that is mute at this point. Actual logged vane has no resemblence to what is entered in the tables.
Max vane does seem to cap vane position, but as far as regulating boost, that is worthless. Max vane is necessary for transient considerations. It is very valuable in enabling quicker spoolup. If I reduce all those numbers, we get a slug performance-wise.