I have noticed a little rattling coming for the engine area of my 2002 RSX. I notice it most when I am coasting or giving it very little gas. When I was having APEX install my intake they asked me if I had heard it before. I said yes (should have said no, and let them fix it
)and asked them if they knew what is was. He guessed it was the heat shield on the manifold. I was wondering if anyone else had any input? Anyone experience this before.