I installed a foam 4 nozzle system and really struggled with nozzle placement..You never know how your car will be when a fire breaks out. Is it right side up? Did you put it on it lid? Are you on the side? If you place them the way the instructions say and you put it on it's lid, everything above the nozzles will not get the foam. I ended up with one on the bottom of the motor, and on one side up high and one on other side down lower, last one pointed right to the middle of the dash.. still didn't feel good about the placements.
I did see one video where the guy pulled the the leaver and it barely came out, it was very disheartening.