In addition, my hand-held extinguisher is in the trunk too.
The fixed system is intended to "knock" the flames down initially and the hand-held unit will povide any needed flame "clean up". It's about as safe as I can get .... with a little racer bling to boot.
Some people think it's nitrous and understand very liitle about fixed extinguishing systems (just don't see them much on street machines) Total investment was around $700, small potatoes compared to other things.
The fixed system has nozzles on both sides of the intake, forward installed. In each nozzle are 3 orifices, providing a 120 deg spray pattern on each side. This should do good with snuffing anything out. One needs to make sure the engine's off along with any cooling fan(s) to prevent evacuating the smothering gas. The other 120 deg nozzle is under the dash, spraying all under the dash electrics/electronics with an orifice dumping in the driver's footwell. I did a good bit of research prior to purcase and installation.
Dave