negantem non est
AO Silver Member
Join Date: Jun 2011
I would have thought it was more a combination of fuel rail pressure and injector openning duration. Given the fact that the computer also knows each of the injector flow rates it can work out instant mpg.
Just a thought before you all jump down my throat. But as you say this still does not explain why a remap would have any effect.
Last edited by coxy1; 11-09-12 at 16:44.