I'm starting to fiddle around a bit with the ECM, and I have seen that recognizes some of the maps for? I read on the forum that c'? people with the 2d representation, there are other... With the criterion that you understand these maps simply seeing a chart in 2d? I'm confused... In some cases you need 3 values on 3 axes to make a map, how do you understand it in 2d? For example, the map egr on a 2.0 TDI PD as it is identified?