Change or delete the EGR. If your state doesn't do a visual check just delete it and cap the manifold and then get your tune updated or get the car tuned.
2000 Mustang GT Steeda #0048 34k miles. 99 Cobra 4V swapped, FTBR IRS swapped, exhaust, tuned by James Gordon.
Just because I give you advice, doesn't mean I know more than you. Its just means I've done more stupid ****.