I couldn't call the interior blacked out without having black carpet could I?
I started with the rear cargo area. This carpet can be removed but I chose to leave it in. I used dye in a condiment bottle to squirt dye on the carpet and then agitated it heavily with a nylon brush. This made an absolute
MESS on the interior trim but luckily it was easy to clean with alcohol. And it's going to be black anyways I guess.
Now the rest of the carpet... I chose to replace the carpet instead of dyeing it. I chose the ultra plush version and you can see it's twice as thick as oem. I also sound proofed the entire floor and covered it with closed cell foam for heat insulation. Installing the carpet was a major pain. Cutting all the holes for the seats, wiring, and vents is extremely tedious and time consuming.
If you're going to do this, it's imperative you buy molded carpet and to take it a step further, you should also buy whatever sound proofing layer the factory will add to the carpet. It will help it retain it's shape much more. Getting the carpet to fit in the back is the most challenging part because of all the curves.
Did I like doing this? No.
Was it worth it? It's hard to deny, the black carpet finished the entire front of the 4Runner and I'm incredibly happy every time I open the door. There's only 4 pieces left and my interior blackout will be complete! (Until I decide to do my headliner)