Originally Posted by
black_jack
Its always better with the EGR blanked with a solid plate - turbo spools up quicker, eliminates the "EGR flat spot" and the inlet does not get contaminated/ choked with carbon/ crud - more reliable too (EGR valve cannot fail if it is blanked/ disabled)
If its a Euro4 the EML can be reset regularily with a code reader
Def felt like it didn't drive as smooth with it unplugged.
I'd rather have it working that reset EML light all the time