I'm in the process of doing an EGR delete, oil cooler, blue spring kit, coolant filtration kit and upgraded FICM plus atlas tune. I pullled my EGR cooler off and found the coolant fins are round which tells me my 03 EGR cooler was upgraded;( If I would have know that, I may have kept the cooler instead of deleting it. The EGR cooler has Garrett stamped on it so it may be stock?????

 

I still would have deleted the cooler. The cooler is one of the big problems, it gets clogged to easy. trust me you made the right decision on deleting the coooler