Originally Posted by Ron

Thanks Robert. Polydyn is one of the 3 major performance coaters on the US along Swain Tech and HPC. Their coats embed on the metal and they guarantee it will not peel/fall off. They have several grades depending on your needs. I did it to reduce engine bay temps. It should also help with turbo spool time since it reduces heat transfer from the parts that it was applied to. It keeps hot air where its supposed to be.