Originally posted by J-Lab:
Yes, it would trigger a check engine light.
You can, however, install a restrictor plate between the EGR and the Intake Manifold with a smaller diameter hole to restrict the EGR flow.
I have this installed, and many people feel it helps with initial throttle response.
This mod does seem to provide a little more pep. My restrictor plate is the same size as the EGR gasket but with a 5/16" hole. Blocking up the EGR completely triggered a CEL on my OBD-I vehicle.
