The only extinguishing agent is contained within the length of the tube itself, that’s not enough volume. Like any decnet fire extinguisher, you need capacity. The bigger the better. With no additional agent reservoir, thats a few seconds of discharge at best, totally dependant on the size of the failure in the tube? So think something like, phfffft , , , , , , and done. It might extinguish a small fuel fire, in a small space for a second or two, but it has not cooled the heat sources inherent within an engine bay and if the fuel is still leaking, re-ignition will be a reality.
Then directionality and spray pattern become issues, (as will the cable ties) OK, the tube fails and releases the agent, what’s to say it is actually directed at the fire and not spraying it against the firewall? Again, this might work (extinguish) within an air tight space, but the air-cooled engine bay is fairly well ventilated, we hope.
A quick check of the web site and itmakes no mention what the “clean agent” is, so it’s hard to predict what might actually happen. And the web site makes no mention of any product testing, certification or listed by any independent 3rd parties testing labs within this country, or any others from what I can tell?
And, no demonstration videos of it working, wonder why?