Someone else mentioned that, and I've been thinking about it a lot lately. In short, I don't agree for two reasons.
First, the oem "heat shield" on the underside of the hood is intended to do the same thing (keep the hood from becoming superheated and quiet transient engine noise), it just doesn't work as well as the Dynamat product in the interest of being cheaper, easier to install, and far more permanent. (The Hoodliner is literally a sticker...)
Second, I don't believe the hood+insulation is intended to aid cooling whatsoever, and in fact having a product in that location with a thinner reflective membrane as opposed to a thick absorptive layer creates an assembly that both reflects MORE and retains LESS heat overall. This in turn actually aids cooling by allowing the heat to remain airborne where it can quickly be expelled out the bottom of the bay, as well as reducing the amount of heat soaked material inside the bay.
In summary, I believe this product to be vastly superior to the oem part in all ways aside from two -Expense, and longevity.
I'm still planning to do some data logging of intake air and coolant temperatures that I will compare to the logs I have from before the install.
