Well, I blanked mine off yesterday to cure that "stutter", which it did. Now have a engine management light which means something else is working correctly (in reporting the EGR is blanked). Have ordered one with a hole in, to see if that sorts both the stutter and the engine light. AFAIK blanking it off doesn't cause any engine issues, but someone will be along to correct me soon.
Do you need to blank yours to cure a fault, or just because you can?
I blanked mine off last weekend and it seems to have solved my issue. (When I lifted my foot off the accelerator and dipped the clutch the RPM would take a long time to decay). My EGR is a Euro 3 ( no electrical contacts) so no hole, no light.
Supposedly better economy and engine response as your not recirculating exhaust gasses.
When I bought mine it had no power until the turbo kicked in, on looking down the EGR the gunk had built up which restricted the induction down to an inch hole so was starving the engine of oxygen until the turbo pressurized the induction.
I cleaned and freed the EGR and removed the inducton manifold and cleaned that out, then pushed a piece of solid round hard plastic that was wider that the hole in the vacuum pipe and pushed it in the vacuum tube then reconnected it to the EGR to stop it opening. Mine does't have any electrical connection going to the EGR so no warning lights
hello sid car went into limp mode turned out to be a pipe off the bottom of the egr had plate with hole in but blanked off to see if that was the prob all ok now but just wonderd weather to put plate with hole back in not to sure wot blankin it off does