It probably helps. I use to insulate everything I could on my cars in the ol' days with my cars. You name it, heat shields, header wrap, ceramic coatings, fuel line insulation, vented hoods, CO2 spray....... This mod will certainly help for everyday driving and keep temps inside the intake cooler consistently. A little more power could be had at most times consistently. Nothing miracle about it. Been done for as long as hot rodding has been around.