In the winter you should remove your 3800 Series II plastic cover. heh. My mom pulled in the driveway today and parked her car and I was like "wtf is that smell.." I go up to the front of her car and it smells like burning somethin and ****. well, I take that cover off and low and behold there is a rat nest all under that cover between the fuel injectors, and under the little gap between the intake plenum and the manifold below it. There was a nice and cooked rat in there too. ugh. anyway, make sure you check under there for rats.