Does anyone know how to get the plastic firewall off? I need to remove the supercharger and I can't find anything in JTIS. I got the cowl vent screen off, and the side pieces around the cabin filter and brake booster, but the center piece appears to be one piece down into the driveshaft tunnel. I've searched and found posts where people say it's not that hard to remove so I must be missing something.

 

I went through the exact same thing 2 weekends ago. It is held in place by washers that act like nuts. Some areas have a set of two over each other. They can be hidden by the insulation.
I went ahead and tore off all of the insulation to see what was going on.
I went ahead and left the plastic firewall off for the time being until I replace the spark plugs. I'll probably replace the insulation as well.

 

They are called push on fasteners. Here is what they look like:

 

Hi if your replacing the valley pipe replace all the hoses when I done mine I cut off the two heater hoses that go onto the heater pipes there as they seamed welded on the hoses are not that expensive from main dealer someone on here done a write up on this job very helpful I took his advice about replacing all the hoses glad I did also I changed the header tank

 

I think I left mine in place and just cut off the hoses made the job a little harder to do

 

I got it off! Thanks for the tips. I pulled the insulation off and found there were push fasteners hidden behind the insulation, as well as double fasteners on top of AND behind the insulation.

 

Nice! Gotta love the forum!