Not much concern for the environment in this thread.
The higher combustion temperatures in your engine caused by removing the EGR cause more NOx to be produced.
NOx is a precursor for ground-level ozone, and that'* bad for your health. That'* why the government has mandated emission controls on all automobiles in this country.
Unfortunately, people don't give a **** about the environment or don't know any better, that'* why emissions testing is mandated for cars in areas with ground level ozone problems.