Join Date: Aug 2012
Location: Rushden, Northants
My Motorhome: Mercedes 614D
Thanked 265 Times in 244 Posts
Most diesels can have the EGR valve removed, Land Rovers in particular have any number of kits on ebay for the 200/300TDi and TD5 diesels.
The car emissions test is for CO, NOX and CO2, plus diesels have a particulate or smoke test.
As the EGR valve does not materially affect the test results of a diesel, it can be removed, BUT it is possible that a vehicle may fail the new MOT's if there is a component missing in the emissions control that was fitted from new.
This has to be tested during this year, but initial results seem to indicate that testing stations aren't taking too much notice for the older vehicles, but are with vehicles that are less than 5 years old.
If it is working properly, I'd tend to leave it alone and worry about it when it goes wrong. In the meantime look out for kits to take it out, probably ebay again.