I just joined this forum but iv'e been reading all the good info here and cant really find the answer. A year ago purchased an 08 F-450 6.4 been fine till the other day the EGR cooler is leaking i want to delete the EGR valve and cooler but my state has emmissions is there a way to block off the EGR valve without removeing the valve itself ? and can i block the flow of coolant and not remove the cooler? and in doing so will this turn on the engine light. basically i want to block it off but make it look like its still there.