I wanted to dress up my engine a little bit, so I decided to paint my IC pipes.
Round 1: I went the rattle can method. I cleaned, sanded, primed, and painted them. They looked great, but the finish quickly started cracking and peeling, I guess from the heat.
Round 2: I took them off and got the pc'ed. They have held up longer than the krylon did
Costed $100 to get the old paint bead blasted off and coated.
The only issue I encountered with the pc is that it's SUPER smooth. I kept blowing boots off. I finally had to rough up the finish on the ends and spray hairspray to keep them on.