I have an 05 6.0 just recently found out the oil cooler and egr cooler are leaking. Ford quoted me 2,100 to fix it so im doing it myself. Heres my question. I wanna block the egr cooler off on both ends. would it throw any codes being blocked off and valve still in? I need to keep it looking like stock. I have a Chrysler service contract on it. Truck might have to go back in for head gaskets and thats covered with my warranty. My dealer told me he would would work on it if i deleted it but if Chrysler sends an inspector out and sees its deleted it could void my warranty.