I want to cancel EGR valve for a short time for a test. I searched whole web but I couldnt find where the egr valve.. Anyone know where is that part? I know what this piece does, as far as I can see from the pictures, there have no electrical cable connector socket, so, I dont understand how does it work, how it is triggered? Does it triggered with pressure or something? Car is 2010 cruze petrol engine...