I saw some gaskets online, (throttle body gasket and a intake manifold gasket) that claim to lower the intake air temps and thus boost HP, they are only like 15 bucks each, I was wondering would these be worth it?...btw they're going on a turbo B series engine.

 

I like them. I see very little gains possible just because of underhood temps, but it only makes sense that something thicker would not directly transfer heat from the cylinder head/block as well. I think a race car that only runs for a minute or 2 tops would see the most potential from this as the engine bay doesn't heat soak like a daily driver does. Either way I rock one on all my builds.