Turbo downpipe iinsulation kit

[Ghostman]

I bought a turbo insulation kit, http://www.thermotec.com/products/full/15001/15001.html
and the very last sentence in the instructions states that the downpipe should not be covered.
Can someone please tell me why?

To reduce engine compartment temp. I wanted to eventually cover the headers, exhaust AND downpipe since so much heat is released from it.

Thank you for any info.

 

[skata]

i just installed the same kit on my truck.
i think the instructions said not to wrap the downpipe with the aluminized wap. just use the 2" regular wrap that comes in the kit. i think it has something to do with keeping too much heat in the pipe.

 

[Ghostman]

What is the result of too much heat?

I have an ATR downpipe.

 

[skata]

i have the atr also, but that doesnt make a difference.


quote from thermotec:

The specific make up of the Header Wrap was developed as to not over insulate the system and provide just the right amount of Insulating properties.

check out their site, good info:
http://www.thermotec.com/technology/technology.html