Hi
No probs re the link m8.
Regarding the other bit , It is so that people can totaly remove the EGR valve compleatley, it is not nesseary BUT it will help SLIGHTLY with the airflow because inside the valve that is fitted as standard , there is a lump where the valve its self seats.
I sell the pipe for people who want this lump removed for max airfolw as poss.
Regarding MOT no there is no problem with that ,
Vosa ( Vehicle and Operator Services Agency ) MOT peeps in english DONT bother if it has egr or not.
As long as the car is under the 3% emmisions then its a pass.
Landrover had to do something for the new emmisions laws and that is where the egr came from , it also is supposed to help with unburnt diesel and recycle it for further burning, it has its disadvantages as you will have read.
It puts hot air back in to the cylnders
It puts air that has burnt diesel smoke back in
It gets the engine oil dirty sooner
The air that is puts back in has less of an oxygen content
The egr valves fail all the time and cause lack of power
The list goes on
Hopw this helps m8
Regards Bell