Ive been having this problem for a really long time now and its bugging me. i know that for the most part the egr cel will come on from a vacuum line coming off, but i have both vac lines zip tied to the egr. does anyone know of any other reason why the egr light will go off other than a vac line coming off? this all started after my ported intake mani/tb. its not a huge deal, it just really bugs me, the light comes on pretty much every day, or every other other day. any ideas?