First make sure the item your order is large enough to cover the area. Different sellers have different sizes (LxW) yet the thickness are all about the same 1/4". It's obviously foil on one side and has a self sticking black rubber 1/4" mat on the other. It's meant for under hood applications so it can take the heat. I also used it to insulate hot plastics that touch my legs/arse around my quads that are near exhaust pipes, also to insulate coolant hoses on my quad that are very near (less than 1") from exhaust pipes to extend the hoses lives and to insulate the fuel tank underneath near the exhaust.
I installed it by peeling back just a small amount on what will be the front of the hood portion, maybe 1/2" x 1", one each end, enough to just hold that part in place while you then carefully move the material towards the back of the hood to get that measurement. I made mine cover more than the OEM sound deadening material covered. You can see where I made small black marks where the smog and tuning info is placed (in case I had to display it when getting a vehicle inspection - they didn't care so I never cut that part out).
After that it was just a few snips here and there to remove the excess and then start back up front peeling more of the paper to allow the adhesive to attach. It took about 15mins to carefully do all this.
I've had it in place just shy of 2 years now and it looks like it's held up well, about 35,000 miles of driving and it hasn't peeled out one bit, it gets wet, deals with central texas 110 degree heat with ease.
It sounds just as quite as the original sound deadening material just is lots easier to clean when needed. Here are pics of mine, it's never been cleaned since install, haha. :cowboy:
