Quote Originally Posted by PaddyMcGrath
It seems to be a bit hit & miss. I've a strong feeling the thing is quite gunked up again, so might just pull the trigger and get rid of it. Then deal with an EMLs that pop up later.
I disconnected it on my car and didn't get an eml but it did log a fault. Disconnecting the EGR can increase fuel consumption. Not by much but a bit.

You can disconnect the vacuum pipe from the EGR and quickly find out whether or not it triggers the EML.