heat shields

[MR2]

I personally prefer to have the heat shields, they are there for a reason. They help dissipate heat. I like my car to be modded but to have the stock reliability and this plays a role.

Dissipate? not really their function.

[GTOJOE]

The shield is exactly what it sounds like. A shield. It protects the components in the engine bay around the exhaust from heat.

[a2j]

so they don't effect underhood temps, correct?

[stealthee]

I would venture a guess that they do affect underhood temps.

With the shields in place the majority of the heat is kept behind the shields. Without the shields the heat "gets out" and spreads throughout the engine bay.