It might be beneficial to the inlet manifold but it's hardly beneficial to people's lungs around the world now is itWhy's that? If anything it's beneficial to the intake manifold.
Are you really suggesting that car engine designers are idiots who design systems that actually have no useful function and are therefore best disabled.
OR
Are you saying you couldn't give a rat's arse about worldwide emissions, energy and green house concerns?
Blanking off the EGR to find a fault (as stilosporting is trying to do) is one thing but I'm afraid I take issue with people who actually advocate such actions on a permanent basis
On the other hand if you want to discus how to make a system run better, by for example cleaning your inlet manifold, then that's another matter