Exhaust wraps help to retain heat in your exhaust system, WHICH INCREASES HORSEPOWER while reducing radiant heat damage, especially to spark plug wires in header applications. By wrapping the exhaust system it maintains hotter exhaust gases while decreasing the density and allows the gas to exit the exhaust system faster. This scavenging helps lower the intake temperatures resulting in more HORSEPOWER. Special Heat Coating allows wrap to take up to 1200º F continuous heat source.