This is gonna sound like a ridiculous question but what is at the very far passenger side of that egr tube and does it hold any benefit at all to block it over on that side also?
4x4Nav posted a picture of the tube earlier in the thread with 2 black pipes, this is gonna sound crazy but what are those 2 pipes for?
The passenger's side of the egr tube is the inlet from the exhaust manifold. Personally, I blocked both ends. That way if the egr cooler (the tube you are looking at) fails internally, the turbo or the motor (depending on which end is blocked) won't cop a gutfull of coolant....
I also got the jet tube replacement plate from yd25.com.au to remove the inlet manifold restriction from the tube sitting in there