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.
A wet kit integrates the additional fuel with the spray of the nitrous oxide itself using a nozzle. With a wet kit, you have both nitrous and fuel solenoids. You can change the nitrous or fuel-jetting orifices to tune a precise mixture of nitrous and fuel.