Aquamist HFS-3 and MINI Tank GB

[Howerton Engineering]

(07-20-2011 08:15 PM)curv872 Wrote:  

(07-20-2011 05:04 PM)Howerton Engineering Wrote:  

(07-20-2011 04:39 PM)curv872 Wrote:  How and what does the failsafe do/work? Trying to decide between the hfs-2 or hfs-3
If one opted for the hfs-2, what would be the cost to upgrade it to a hfs-3 later on?

Do you have a 53 or 56? For the 56 it will cut boost by interrupting the wastegate solenoid. For the 53 there aren't a lot of good options. We are testing a way to drop boost on the 53, the parts are here, we just haven't had time to get it on the car.

The cost to upgrade the 2 to the 3 is $250.

r53 with Jan's head... what would typically trip the failsafe, low fluid, clogged valve, etc?

The system is setup so that by adjusting the potentiometers on the gauge face, you set a safe "window" for the injection. WE can go into more detail on setting this later.
If the flow deviates, either above or below the the failsafe window, the failsafe will be tripped. Causes of the lower failsafe being tripped could be: partially clogged jet, plugged filter, blown pump fuse, etc. A cut line before the flow sensor would usually trip the low failsafe as the pressure would bleed off, a cut hose after the flowsensor will trip the upper failsafe.
In the absence of a hard action(boost cut, etc) the gauge does show the failsafe has been tripped, but you could also hookup a buzzer or light as well.