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I had to drill my Explorer intake too. You will also need to drill the back corner for the pipe nipple to hook up the rear EGR coolant hose. I think I used a 7/16" bit and 1/4"npt tap (1/4"-18)for the barb that I used.
I had to drill my Explorer intake too. You will also need to drill the back corner for the pipe nipple to hook up the rear EGR coolant hose. I think I used a 7/16" bit and 1/4"npt tap (1/4"-18)for the barb that I used.