Oh and here is a helpful hint.....
I wrapped my downpipe, manifold (massive on a subaru), up-pipe, and turbo in this stuff (DEI Titanium Wrap). It works WONDERS!
BUT, you should spray that silicone spray over it. I know, I know "but its sooooo pretty!" Thats exactly why I didnt spray mine. Well a little over two years later and its flaking off making this dust in certain areas. Not pretty or a good thing to work around, that dust will have you itching like a Sorostitute after rush blowout.