The same engine is used in the Civic, etc and for these units you will need a remap to ensure the ECU doesn't flag a warning/go into limp mode. The remap will also ensure that the air/fuel mixture is corrected.
I've just done this on my Civic including a physical blanking plate behind the EGR valve, made a world of difference.
Why do you think mention EGR blanking? - do you have a specific issue?
Does a pure EGR off map alter iq and or turbo maps?