Engine bay cooling improvements? DIY?

Originally Posted by ChipsWithDips

If you're going turbo, get some turbo blankets for the turbine housings. Wrap the downpipes. Manifolds are so small that I don't think you could practically wrap them, though you could possibly cover them a bit with a custom sheet metal heat shield.

If you use wrap on anything, I recommend the "DEI Titanium" wrap over fiberglass since it holds up to heat better, easier to work with, doesn't get brittle like fiberglass. I've seen old fiberglass wrap just crack and flake like potato chips after being on a car a while.