Originally Posted by
Epstein
The later US ECUs have VE tables to remove the assumption, but then you have to know what your VE is at all the points on the map. The old way is easier. Adding cams will improve VE and shift everything a little bit, but that goes into the tune. The VE also changes as the VE (and TP) goes shitty as the cams lose efficiency up top, which is in the tune as well.
Good to know. Is there anywhere I can read up on this stuff? You seem to be the only source, and I don't want to keep bugging you.