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Once upon a time I owned an 2003 Evo 8, a car I wish I still had to this day. Within that car was a switch that was new to me, right behind the shifter was a toggle switch with a picture of an intercooler on it. When you activated this switch small sprayers in the bumper would spray water onto the intercooler. They did this to reduce the inlet air temperature and to increase engine power. Now an intercooler is just a fancy radiator so I figured since we use radiators in our PC's then this technique would also work there as well. So using what I learned from my Evo 8 intercooler sprayer I built a radiator sprayer for my custom loop to see what if any performance can be gained by doing so.