EGR valve

Can someone tell me for what and why is the EGR valve cancer, mechanically or electronically?
How are your advantages and/or inconveniences?
Does its annulment affect the ITV?

Thank you so much

The EGR recirculates exhaust gases "to lower temperature" of combustion, is canceled to prevent the admission from the Hollin mixture that comes from the exhaust and the oil vapors (a black paste is formed). In the ITV you will do very well because it does not produce Hollin when it is annulled, but the problem is that the temperature in the camera and the gases are increased are more harmful (NOX), in addition that the catalyst is broken by the heat, and among other things the medication of air inlet to the engine ... (the ECU is programmed to add this volume Egr to the value read by the flow and dose fuel and dose fuel. Now if you are thinking of canceling it, think that it is not as good as they say, I do not like the EGR, but it is what there is. Greetings!!

It also depends on what country vivis since the valve decreases contamination if the cancellation will contaminate much more be careful

Hahahajajajja Eliminala is a very bad way that engineers found the contributing gases burning twice hahahahaha does not help at all.

Good afternoon partners !!!
I am totally in favor of canceling the EGR ...
My motifs are the following best engine performance because you burn air with a bit higher% of oxygen. I better mix.
You avoid obstructing everything that is the admission system, whether turbo or atmospheric.
The input air is colder than the one that enters through the EGR and therefore higher motor yield (if not because mounting intercooler in engines to cool admission air) ???

Inc.Vs that the ITV will throw you back if it is gasoline due to excess CO2 emissions (rich mixture) therefore contaminates more.
If the engine is diesel there is no problem, they have no system to detect combustion gases (as if you want to empty the catalyst) without any problem. A greeting and it is my opinion