I wrapped my Spooled^ header for my silver P5 with DEI wrap from Summit. It's still wrapped and holding up well, right Larry? It went from my P5 to Josh's to Larry's.
I wrapped the headers on the silver P5 KL with DEI and painted them with the hightemp silicone paint and they still look good.
I wrapped something for someone else local too, Kevin's header maybe?
I only used DEI for the times I wrapped stuff so I can't comment on the eBay stuff. I soak the whole wrap in a bucket of water, then wring it out then go to town wrapping whatever parts you need. I've never had a problem with any of my wrapped parts. But again, I was wrapping decent quality header(s). No thin walled eBay stuff.
Jake has his intercooler piping wrapped too, any reports of damage, Pringles?