I have started the work on the FIA plumbed in fire extinguisher. Its AFFF (foam) and the 4L alloy electric version (small wiring to push buttons, not pull cables, can be triggered by external or internal button.
There are 3 nozzles in the cabin, 2 at the front on the fuel tank tunnel (1 pointing at driver midriff the other at passenger footwell were alot of electronics will be) and 1 on the rear firewall aimed at the back of my seat, in case of massive engine fire such as rod out block, oil on exhaust ect. I will have 2 in the engine bay also.
Like all plumbed in systems, there not designed to put out a fire, if it does then thats nice, but there designed to save your life. Cool you and cool the fire with foam as you try to stop the car, undo harness, climb out around the cage ect.
Nozzle pointing at back of my seat, and also 2nd main 8mm line going into engine bay, will be for engine bay nozzles later on.
4L bottle mounted on floor