1. Output which is related with piston position. So output which is active when piston is in tdc to tdc+40deg(for example, values can be selected). That was implement in older firmware for knock integral.
- With that you can map engine with cylinder pressure sensor which i and few vems users have http://www.tfxengine.com/SuperchargedEngineData.html
- With that it is easy to scope engine if there are COP ignition coils
- Some knock fitler need that information for noise reject
2. Anytrim which is active only when N2O is active. So pressure sensor of bottle(pressure can be from 30 to 80bar) can be connect to vems for mixture correction)
3. Min rpm for secundary injectors. For N/A cars sec injectors aren't good befor 3000rpm or so.