About a week ago my check engine light came on and we pulled the code and my son turned it off. Everything seemed ok for a week then this morning I get the same code EGR Flow Malfunction. I have an extended warranty, car has NW dual CAI and Magnaflow cat back. Does the EGR have anything to do with those two things? We think not want to see what you guys think. I should add the car seems to run fine.