Originally posted by Suspension Guru
The owner's installation manuel that came from DC Sports specifically says NOT to put tape on like that. I remember reading when I put my DC Sports header on. I heard someone say the reason is because it would trap excess heat that could lead to metal fatique and or failure.
I believe when it gets wet, it traps moisture and will make the header rust.
I don't think it's worth it unless you are roadracing or something, certainly not for a daily driver.