Wrapping Headers

I wrapped the (very expensive ceramic coated custom ones) headers on my wives car and it ruined them. Since then I've had more than a couple shops tell me that is a good way to ruin a set of headers. If you don't mind buying and putting on new headers every few years then it will definitely reduce the heat in the engine compartment.

The end result was that the wrapping kept the heat in and the headers crystalized.