Nozzle based suppression systems have their place...but please please do NOT think that they are a replacement for a fire extinguisher. In our applications, they are even sometimes sub par when compared to a handheld unit. There arent enough nozzles to really protect the entirety of the engine compartment in enough scenarios to make them worth while. Not to mention the fact that on most buggies (especially a bouncer) there is no hood, no real firewalls, no front radiator, etc etc to contain the chemical. It will simply fog out and dissipate into atmosphere or on the ground almost instantly. They do not spray a cloud like an extinguisher does, and the chemical will fall to the ground, so if you are upside down (when a fire is more likely one could argue) the chemical wont even get to the motor unless you put the nozzles on the bottom of the compartment (which would then negate any benefit of them if the buggy caught fire while it was on all 4s).

These suppression systems are way more adequate as, and in reality are designed to be, a driver safety item and NOT a vehicle saving item. That is what an extinguisher is for. Point the nozzles at you and your nuts to give you the few seconds that they will spray to get the hell out of the death trap and grab your actual extinguisher to put the fire out. In order to have one be a really effective system to kill a major engine fluid fire, you would need a massive bottle with a ton of nozzles and it would start to not make sense pretty quickly.

In the end, they are really better suited for spraying into an enclosed space (like under the hood in a normal race car), they wont be super effective in a wide open engine bay with no hood or firewalls, fenders, cowl, radiator support, etc around things to keep the chemical contained. Use them as a safety item and keep the handhelds for putting out the fire...you can at least get right up on the source and spray the **** out of it with a handheld...cant really do that with a nozzle.