Engine/Transmission (1998.5 - 2002) Turbo heat control

[TFlewitt]

I want to control the underhood heat from the turbo (AC and air filter) with either a shield or heat wrap. I always understood it was advantageous to retain the heat in the turbo/exhaust system for efficiency. Any disadvantages to wrapping the turbo and downpipe? Corrosion, coking the metal, etc? Did anyone experience any performance differences, mileage increases towing? Thanks!

 

[RacinDuallie]

Have you ever thought about having just a simple thermal barrier coating applied to the cases?

 

[RJPotts]

I've thought about this too.

We put header wrap on my friend's race truck, and you can touch the headers immediately after a pass and not get burnt. Its warm but won't blister you.

The only drawback is it makes stuff rust much faster.

Anyone done anything like this?

-R. J.