Review on Design Engineering 010392 High Temperature Reflective by Rashan Jimenez

I have noticed a significant drop in temperature on my aluminum intake manifold. The pipe was untouchable after the ride, I could at least touch the intake pipe with the foil. The manifold cover has lowered the temperature significantly again and the intake pipe is now warm but not hot. I count that as a win given the proximity to the valve cover and exhaust manifold. Easy installation on straight sections, very difficult to wrap over welds and bends without creases.