Rust!?!?

hey fellas, gotta lil problem on my hand. my car is sitten at my grandparents house under a carport and a cover. well i pop my hood christmas afternoon to show my uncles and my headers (tti) and intake (m1) have rust spots on them. im sure and scrub the intake with comet or wd 40 to get it off. but not sure about the headers. im usally extremely particular about the details and im pretty upset about it. the car has been there for 2 weeks and the weather has been pretty humid and nasty down here in houston lately.. not sure wat to do. any advice would be much appreciated...PEACE