After my car is running at normal operating temperatures i get fumes from the area of the hood. I cant see the right side because of my hood scoop, but i see heat fumes on the left. I cant find any exhaust leaks, checked with Seafoam. I also can't find any air leaks, but my boost gauge moves back and forth over the gauge line when idling. Is this a heat thing because i have no turbo heat shield, intercooler thing, or just engine heat releasing from a non-closed hood?