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Discussion Starter · #1 ·
Currently looking at this system the Cooling Mist kit.

On the spec sheet it ticks all the boxes a high pressure pump, jets designed to atomise the water and 7x jets

Question has anyone fitted this kit? What is the quality like? And lastly reliability good / bad?

I’ve used these kind of kits previously and using tap water and ice cubes in the tank gave around 40+Go increase on a turn’s Ford YB engine and around 23 hp increase on a turbo’s CVH unit.

So I have already used these type of kits (home made and bought) and the benefits from tap water and ice cubes is the cheapest power and torque upgrade for ££ or $$.


Eliminate heat soak problems with the Coolingmist Intercooler spray kit.

Unlike water/methanol injection, this kit cools any cooler via evaporation from the outside. It differs from cryo (i.e. "freezing gas") spray in that it eliminates heat build up over time vs. intervening briefly at the last second. This makes it valuable for hard street, rally, and some drag strip duty.

While under boost, an intercooler functions mostly as a heatsink. Intake air raises core temperature faster than the core can radiate it back into the atmosphere. Heat steadily "soaks" the core and reduces intercooling in the process. After a point, the intercooler stops cooling the air completely. IATs soar and performance drops. Coolingmist cooler spray steps up your game with a plumbing package designed for distilled water (hot summer), windshield washer fluid (all season), or typical 50/50 water/meth injection brew (cold winter).

Kits come standard with a total of seven spray points for even distribution across the cooler's frontal area. Plumbing may be attached to the inside of a bumper skin, through grill slats, or attached to the bumper rebar with great ease and functional convenience. The further the spray points are from the cooler surface, the better it works.

HOW MUCH CAN AIR TEMP EFFECT PERFORMANCE YOU ASK???

From the table below, you will note that air at 0C contains almost 30% more oxygen per given volume, than air at 77C.

Air Temperature
Air Density
% increase of oxygen

77C
0.9950 kg/m^3

40C
1.113 kg/m^3
+ 12% oxygen

27C
1.1614 kg/m^3
+ 17% oxygen

0C
1.2763 kg/m^3
+ 28% oxygen

So if your car is tuned for say 12.0:1 fuel mixture (rich) for maximum power and the air going into your engine is at 77C, you might make say 241bhp @ wheels. Now if you could get that intake air down to 0C and still have your engine tuned at 12.0:1 fuel mixture, you will make 30% more power based simply on oxygen levels in the air = 241bhp @ wheels x 1.3 = 314bhp @ wheels. That’s a massive 73bhp increase!!! Now obviously, unless your using dry ice somewhere along your intake path, you won’t get the air to 0C, but that is just to give you an indication of the true effects of air temps and their relation to power output.



Kit Contents

  • 130psi pump
  • 20' of High Pressure Black Tubing
  • 7x Nozzles & Holders
  • Check Valve
  • filtered self sealing tank tap
  • 7x nozzle/hose mounts
  • 3x 90’ hose fittings
  • Inline Fuse Holder with 10 amp fuse
  • 10' of each red and black wire
  • Zip ties and wire splices and connectors
 

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I don’t known about this particular kit but an ISS (intercooler spray system) is a very good idea. ISS were common in world-level rally in the late 1990-early 2000, and some of the road-going Evo’s had a manually activated ISS from the factory.
 

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It kind of makes sense, but wouldn't WMI make more sense? WMI also has the benefit of cleaning the intake valves and adding power.

I went down this route with my ST, and eventually settled on neither; a larger intercooler performed equally to the intercooler spray, and it cost less than a WMI kit. WMI would have produced more power. (note: I am at a decent altitude, so air pressure here is only 12.8 psi to begin with, with the resulting loss of oxygen density)
 
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Yeah second the above and IMHO it’s a period correct thing, you know, WRX and Evo 90’s rally car type setups, love experiencing them as a novelty. But innovation in beefy intercooler tech/designs, advances in WMI, and considering a spray isn’t a lossless system like an air/water intercooler setup, seems like extra plumbing then the refilling which ends up being more hassle. Cool though.
 

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I’m perfectly happy with my wmi setup. Added fueling, no knock, cleaning my valves and my last 1st to 4th WOT run saw my charge air temps at edit 43f (6°c). I see no benefit to added another sprayer and more complexity to the setup
 

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Discussion Starter · #6 ·
It’s about a $100

It’s only a water spray bar kit, it should give you a simple bhp increase in the region of 10 -30bhp+ from just chilling the intercooler.

I under stand the benefits just wanted a bit of feed back on the kit by Coolmist as used previously an Aquamist kit but too many $$

Syvecs takes care of the Methanol side of things
 
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