ok so whats the deal with header wrap? ive heard that if you wrap your header you can void its warranty...i didnt even know headers had warranties..any ways do you think tis really worth it. does it cool your bay and cabin down? i know my rex is hot as hell under the hood and i think it might even make my cabin warm cause i can feel heat from the center console. would header wrap help me out. i have an aftermarket header 4-1 with no heat shield.