The Synergy MaxFlo Clunk features a stiff foam based filter element which soaks up fuel when submerged similar to a kitchen sponge. The material used to soak up the fuel is beneficial for improving not only engine performance, longevity, but additionally provides more consistent fuel delivery from the start of the tank to the end.
Under even the simplest aerobatics and low fuel levels, a standard clunk will suck air and send the engine into a lean tune for a few seconds. Over time lean runs can destroy glow plugs prematurely, or worse! An entire engine!
MaxFlo greatly reduces this chance, and is good nearly until the last drop.