allright my manifold just arrived, on the underside of the lower manifold on the side where the crankcase breathe filter/pcv is housed their is what looks to be a thin metal pan bolted on. The pan covers maybe 1/3 of the bottom of the lower manifold. What is this and do i need to keep it on ETC? Im swapping in this new manifold on saturday so i want to figure out what this is, thank you for the help.
