What have they installed in the right crank case ? What's the point of installing a tank inside the chassis ? What is the little white thingy ? What is that "some system" ?
Euro 2 is emission control, all the harmful gases which get built in the head are removed via pipe from the head so that they do not enter exhaust (as can be seen in the Zxmco pic) and than transported to the air filter box where they are recycled and removed.
Same is the case with CG where the pipe is on top of the head.
Point is without anything attached to the head, doesn't matter if they install EFI engine inside the battery compartment it wouldn't matter.