Edema has many possible causes: 1  Prolonged standing or sitting, especially in hot weather, can cause excess fluid to accumulate in the feet, ankles and lower legs. 2  Tiny valves inside the veins of the legs can become weakened, causing a common problem called venous insufficiency.
Cars with nitrous-equipped engines can be identified by the purge of the delivery system that most drivers perform prior to reaching the starting line. A separate electrically operated valve is used to release air and gaseous nitrous oxide trapped in the delivery system.
Nitrogen mass flow is the majority of the nitrous mass flowing down the central hole or fuel port, and so this does most of the eroding of fresh fuel to burn with the oxygen within the nitrous. So it significantly aids the fuel erosion rate. (see ourâ Introduction to hybrid designâ paper)