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guess i am going to use
12v pump about 10$(ebay)
water tank &lt;1L
4 nozzles (from a bottle mister)
On/ off swtich to battery

each nozzle is going to a corner on the little side intercooler in my b5 1.8t

i need help with temperature read out

i want to have a red output display in my car.
i seen the regular ones that look like soviet digital clocks, any way to get those to read out in red back lit, is it hard to weld your own display from parts?

do u think the plastic ones will melt? i want to have a seperate tank for alcohol water mix.

Alcohol is a catalyst for oxidation. Your Intercooler will become brittle and less effective, than with just air. Use Distilled Water, CO2, or NO2. The alcohol is effecive for the short term, but i can damage the thin aluminum of the fins.