I would get a blocker plate, fingerstick, boost stick, and then plug the EGR back in. Mine whistles "Dixie" now. A low HP tune will help also...I have my EGR unplugged and I have noticed I don't here the Turbo Whistle like I did when it was plugged in. Am I loosing boost with the EGR unplugged? Why is it much more quiet? Any help appreciated.