Dan is correct in this, ESPECIALLY because he said "the ecu (I think he meant to say EGR) is working for you." As the EGR allows heated gases into the intake, it actually aids in vaporization to some degree.
While not all vehicles will throw a code for EGR failure, some will. I recommend cutting a new gasket if you want to see what happens with it out of the system. simply leave one of the openings unopened and the flow will be stopped. You can use an old aluminum can and cut it to match the EGR base.
I say "Try it!" After all, all you need to undo it is a new $2.00 gasket!
Ron