New LS1 Owners - Newbie Tech - EGR Mod?

Ok, I have seen this mod, but im not quite sure what it does and how it works.
Help.:confused:

http://www.installuniversity.com/install_university/installu_pages/sophomore_year/egr_free_mod.htm

for what its worth your better off just getting an ls6 intake and !egr.

http://www.installuniversity.com/install_university/installu_pages/sophomore_year/egr_free_mod.htm

for what its worth your better off just getting an ls6 intake and !egr.
True BUT this is $400 cheaper.

True BUT this is $400 cheaper.

true but the ls6 intake gives more power as well as !egr and you can pick up a used ls6 intake for under 300.