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Why Choose the Boost Cooler by Snow Performance?

Take a look and see why the Snow Performance Boost Cooler is your best choice in water/methanol injection: 

1. Engineering  Each system has been designed and tested by engineers to ensure reliability and robustness. The Boost Cooler will do what it should do for a long time. No failure prone brass, or rubber, is used as the others and our component flow rates are calculated and speced to work with each other. Snow Performance pumps are designed with exclusive features to ensure reliability and strength.

2. Digital Variable Controllers For Different Applications  Not just boost actuated, we have specially designed controllers for each vehicle/application to ensure maximum power. Snow Performance has 7 different control systems, and they are each specifically mapped and designed for their applications. Unlike the others, most of our controllers feature true 2D maps facilitating the most correct injection and power under all conditions for the most advanced systems available.

Competitor "C" claims to have controllers that inject on a 2 dimensional map. Unfortunately, that is very misleading because it only injects according to one signal with a threshold, or on/off point, according to another signal. Using that threshold point is only possible if, and only if, you download their software onto your computer, connect your computer to the controller, and make adjustments to the on/off point that way. If you want to change that set point, you have to connect to the computer again, etc. Hardly easy to use or adjust, and only one dimensional in the delivery.

Diesel competitors have introduced water injection kits that fall terribly short of the quality and function that any customer should expect. All of Snow Performance's diesel system designed for the street include a digital controller that progressively varies the amount of water/methanol injected according to either boost or boost and EGTs. All Snow Performance Diesel Systems feature at least two operational nozzles, as diesels simply demand larger injection volumes than the typical gasoline application. 

Competitor "Purple" uses a stepped injection to start with one nozzle, add a second, and then add a third. What this means to the customer is that it is not an accurate injection at all - do your diesel injectors inject full blast or do they vary the amount of fuel they are injecting for changing conditions? Snow Performance varies the amount of fluid being injected to match what the engine needs. Competitor "Purple's" staged injection means it won't provide a smooth power increase and won't be the correct amount injected over even a narrow range of RPMs and load so it will be impossible to get maximum cooling and power increase. 

To adjust any of Snow Performance's systems, all it requires is a simple dial or push buttom adjustment. The kit fromCompetitor "Purple" requires that wires be cut or connected - not easy to do (or undo) and not a progressive adjustment like a dial.

So, what is 2 dimensional injection management?

Snow Performance's 2D mapped progressive controllers are a TRUE two dimensional system meaning if either input signal goes up or down, we vary the injection quantity by increasing or decreasing the injection rate. Our Stage 2D Boost Cooler for Mitsubishi vehicles (#20009) injects variably according to boost and variably according to the MAF sensor signal. So, for a given amount of boost, say 10 psi, if there is a small amount of airflow, we will inject less than if there is a great amount of airflow. Likewise, for a given amount of airflow, if the boost is higher we will inject more than if the boost is low. Varying the injection according to BOTH input signals is what makes a map 2 dimensional and more correct than the delivery of theCompetitor "C" kit. 

Snow Performance's Stage 3 Diesel Boost Cooler kits are also truly 2 dimensional, injecting variably according to both boost pressure and EGTs. That allows for the most accurate injection while towing or even just cruising around, resulting in smoother power than the Competitor "C" 1 dimensional and threshold type of delivery or the Competitor "Purple" staged injection system. Snow's controller has a master adjustment to change the delivery aggressiveness - no need to hook up to a computer or download anything - it can be done on the fly very quickly and easily. It can also be switched from 2 dimensional boost and EGT mapping to just boost mapping for a more responsive injection when racing or sled pulling - with just a flip of a switch! No computer hookups and no wire cutting. Easier to use, less expensive, and better performing.

3. High Pressure/ High volume Pumps  Our pumps are specially designed exclusively for Snow Performance to deliver higher pressures and reliability. Features include: higher pressure, integrated check valve, and thermal protection for safety. Each pump is pre-tested and designed to work with methanol unlike some of the others that use off the shelf agricultural pumps. 

4. Unsurpassed Atomization  Along with higher pressures, our nozzles are specially designed to spin the fluid supersonically before forcing through a venture-shaped orifice for the best atomization available. Better atomization means more power and cooling. These nozzles are also specicially machined to our specs for ease of installation and clear spray pattern.

5. Trained technical and tuning advice  trained, knowledgeable technicians are available to help you. We have more data and hands-on experience with diesel and gasoline applications than anyone so you dont have to guess. 

6. Warranty  Life time warranty available. Even the standard warranty is a full 2 years. Snow backs its systems with industry leading warrantees. Compare this to the others 1-year limited warranty.

7. Safety  Our new SafeInjection (patent pending) is the ultimate in safety for even the most aggressively tuned applications. This ensures worry-free power in even the most demanding racing applications as well as full power on the street. 

8. Proven Performance  All our systems are backed with dyno data proven by numerous magazine articles and more World Records than anyone. Buy the same kit the pros and championship race teams use buy the Boost Cooler.

9. Complete kit  When you buy a Boost Cooler, you get a complete kit right down to the reservoir and sealant. Also, we have more kits for specific applications than anyone. Eliminate the guess work - get a kit for your vehicle complete with installation instructions that include vehicle specific photos and performance backed-up with dyno charts. 

Snow Performance The Water-Methanol Injection 

Frequently asked questions about water methanol injection~

Regarding Gasoline~

1. What are the benefits of Water/Methanol injection?

Boost Cooler Benefits (Gasoline):

1. Low cost - where else can you get up to 60HP for as low as $304?
2. More Power - We don't create an intake restriction like an intercooler, and unlike race gas, we reduce intake air temps and improve charge air density too!
3. Efficiency - leaner air fuel ratio can be utilized for normal operation.
4. Easy Installation - Snow Performance systems can be installed in a matter of hours without having to remove bumpers or do custom intake piping. 
5. Engine Health - Snow Performance systems effectively steam clean the valves, valve seats, and even the piston tops and intake when they inject. This reduces carbon build up.

2. Can the Boost Cooler be applied to naturally aspirated and nitrous engines?

Naturally aspirated/high compression engines: 

Water/Methanol injection allows the use of pump fuel in all but the most extreme situations which effects tremendous cost savings as well as horsepower increases due to air density increase and higher timing advance potential. 

Engines using nitrous: 

With nitrous, water/methanol injection allows the use of more timing advance even with large (250HP+) quantities. The cooling effect of the water/methanol inside the combustion chamber also makes for reduced peak combustion temperatures.

Naturally aspirated/stock compression: 

With naturally aspirated engines using less than 10:1 compression, water/methanol is used often in warm climates to get the intake temps lower. Benefits include: 10-15 HP increases from air density increases and full timing as well as more effective air/fuel ratios, increased gas mileage, and carbon free combustion chambers.

While power gains are typically less in stock compression naturally aspirated vehicles compared to high compression or forced induction engines, benefits can still be realized due to more timing advance, leaner air/fuel ratios, cleaner engine components, lower temperatures, and the use of the methanol in the injection fluid as a secondary fuel source.

3. Does the Snow Performance system work a carbureted application?

We have systems for carbureted vehicles without superchargers or turbochargers. They inject according to vacuum and deliver 20-25 point octane gains over regular pump gas when using a 50/50 mix of water/methanol. 
Any Snow Performance system can be used with or feature the special 4150 or 4500 style carb plates as well. MC and RT series systems include the carb plates.
Many muscle cars that previously required expensive high octane fuel now use regular pump gas with our system while getting better performance. These cars can use our MC (naturally aspirated) and RT (supercharged or turbocharged) series systems for a clean installation and great results.

4. What power gains can I expect?

Boost Coolers® allow for more power in two ways on a gasoline application. 
Extra octane. This allows for much more aggressive tuning safely to make more power. Timing can often be advanced 10 or more degrees in the power band. Boost can often be increased 5 or more PSI. Air/fuel ratios of around 12.5:1 can be utilized even in high boost applications. 
Better cooling of the intake air charge. We often cool intake air temperatures 50-150 degrees. This means denser air charge for more efficient power.

If these methods are used, a 20% increase in HP is possible. In naturally aspirated applications, gains of 5-10% are possible.

5. Can the Snow Performance system improve my fuel economy?

The MPG-MAX systems are designed to do just that. Both the diesel and gasoline MPG-MAX systems are specifically designed to inject a very small and precise amount of water/methanol under normal driving conditions such as accelerating away from a stop light or driving up a slight grade. 

The extra 20-25 points of octane provided allows for more spark timing advance and a leaner air/fuel ratio with the use of a programmer. Both of these factors not only improve power, their efficiency gains improve mileage as well. Additionally, many modern cars will detect the combustion of the methanol and reduce the injection of gasoline accordingly through the adjustment of long-term fuel trim values in the vehicles computer. This can directly and positively impact gasoline fuel economy. Gains of 5-15% are possible depending on how the vehicle is tuned and driven.

6. What fluid can I use in my system?

Boost Juice®: This is the best fluid to use and is Snow Performances 49% methanol, 51% water mixture that can be shipped to your door or picked up at a local dealer. (If you are using your washer reservoir as the injection tank, Boost Juice® is a great washer fluid works as a de-icer!)
Windshield Washer fluid: Only if it is blue in color and rated for -20 deg F. It should have no special additives. This means it is safe to use and made of about 30% methanol, 70% water. If it is another color or another temperature rating, do not use it. 
You can spike your Blue -20 Washer fluid to a 50% mixture by adding 3 12OZ yellow bottles of Heet® gas-line-antifreeze to every gallon of washer fluid. 
Mix your own: You just need to make sure the methanol is neat and contains no lubricants or other additives. We recommend a 50% mixture.
Ethanol: It is not as good as methanol, but it can be used as a 2nd best option if you cant find methanol. It can also be mixed with water up to 50%.
Do NOT use E85 or any other fluid with gasoline mixed in. It will destroy the fluid delivery part of your Boost Cooler® and instantly void the warranty.
Isopropyl/Denatured Alcohols: These can be used, but are not as good as methanol. They have a lower BTU, or energy content, and a lower latent heat of vaporization (fancy way of saying how much heat they absorb) as well as a lower octane rating compared to methanol. 

7. Why Methanol?

Methanol is a very high octane fuel that is extremely resistant to detonation with an excellent cost/benefit ratio. Its high latent heat of vaporization also makes it an excellent air charge cooler which means a denser mixture and more horsepower. Because of these characteristics, it suppresses detonation more effectively than ethanol or iso-propanol although they will work in a pinch. It is toxic and should be handled with rubber gloves in well ventilated areas only. Care should be taken to avoid skin contact.

8. Where can I purchase Methanol?

Snow Performance sells 51/49 water/methanol mix as Boost Juice (see products). If this is used exclusively, Snow Performance can lifetime warranty a system so long as the free registration card is sent in soon after purchase. 
Methanol can generally be purchased where racing fuels are sold. Also, most gas line dryers like "Heet" are simply methanol. Suppliers of industrial chemicals can also supply methanol for a very reasonable price. Ensure that the methanol is "neat" and therefore has no additives or lubricants added by the supplier. 
-20 degree F rated, blue windshield washer fluid is acceptable for use as well, and is available at most service stations. Although some fluids rated to under -20 degrees F contain glycol and other copolymers, most windshield washer fluids are up to 40% methanol. Try to find one that displays "contains methanol" on the label and is good to -20 degrees F, with no additives or special ingredients and is blue in color.
Methanol can be purchased on the web at and
Additionally, many sprint car drivers and circle track and drag racers use methanol as a primary fuel. They often have methanol on hand and will even sell methanol that has been un-sealed for a long time at a very low price. Just be sure that the methanol has NO additives or lubricants (such as top lube), as they are not needed and can damage the pump.

9. What ratio of water/methanol is recommended?

A 50/50 ratio is recommended. This has been demonstrated to be the best for charge/air cooling, excellent detonation control, and safety.

Ratios of anywhere from 30% to 50% methanol work well and deliver excellent octane gains and cooling.

10. Can I use pure methanol?

While all components of Snow Performance systems are designed to be able to handle pure methanol, it is not recommended for a number of reasons. 

Safety: Pure methanol is easy to ignite and burns with an almost invisible flame. 
Performance: Water absorbs twice as much heat as methanol in the intake and inside the combustion chamber. Water cannot be flash-ignited, so has what is almost an infinite octane number. In the government studies for WWII piston-powered aircraft, 50/50 water-methanol was found to be the best fluid to use for auxiliary fluid injection. 
Tuning and Engine reliability: Injecting 50/50 water-methanol will prevent over-injection. If too much is injected, it will quench the flame front and the engine will bog and lose power. If too much straight methanol is injected, this will not happen, as methanol is very forgiving of rich mixtures. This could instead lead to explosive backfires, cylinder wash, etc. which will not happen when 50% or more water is in the mixture.

11. Do I need an intercooler with Water/Methanol Injection?

Up to approximately 30 psig of boost, water/methanol injection (using 50% methanol) will provide all the density increase/detonation control needed in most applications. Of course, intercooling and water/methanol injection would provide even greater benefits, especially beyond 30 psig of boost. Most air-to-air intercoolers are only 50-65% efficient. For example, with 11 psi of boost and the resulting 120f air charge temperature incre
ase, an intercooler reduces the air charge temperature only 60 degrees. Also, an intercooler will reduce boost 2 - 4 psig. on average.

12. Why not use a windshield washer pump?

Water/Methanol must be injected at above 50psig to properly atomize. Lower than 50psig causes greatly reduced air charge cooling as the result of larger droplets and their reduced total surface area. Also with inadequate atomization, there is a greater propensity to quench combustion resulting in a loss of power.

Snow Performance systems also regularly inject into charge air passages at 40 psig or higher boost pressure, and a simple washer pump will not handle that kind of stress. The pumps in Snow Performance kits are specifically built for water/methanol injection in any environment that might arise.

13. How much range will a tank of Water/Methanol provide?

This depends on a number of variables. HP, injection system, settings, driving style, etc.

For most engines in the 200-500hp range, the standard 3qt tank will last around a tank of gasoline. 
For higher HP levels with the MPG system, it will be more like 1 gallon per tank full of gasoline. The #40016 2.5 Gallon reservoir could last two or even three tanks of gasoline.

14. I dont have any room in the engine bay for a reservoir, what are my options?

 Use the factory washer-fluid tank. A bulkhead fitting (PN# 40080) allows the use of the factory washer fluid tank as a reservoir. 50/50 water/methanol makes an excellent washer fluid. Kits for the 1.8T, 2.0T, WRX/STI, and others utilize this strategy.
Trunk mounted reservoir. The reservoir and pump can be mounted in the trunk. 2.5 gallon reservoir upgrades (PN# 40014) feature extra tubing and mounting brackets for trunk mounting. We always recommend a #40060 solenoid for trunk mounting.

15. Where can I mount my reservoir and pump?

The pump needs to be within about 24 (hose length) of the reservoir, and as low or lower than the base of the reservoir. It is a pusher pump, not a puller pump.
Engine bay: In the engine bay, the reservoir and pump can be placed almost anywhere, as long as they are not very close to exhaust heat, or in the path of debris from the road. Be sure that the pump is mounted at the same level or below the reservoir and that the reservoir is not located higher than the nozzle. If the reservoir must be located higher than the nozzle, a solenoid upgrade (part number 40060) is required to prevent gravity feed. 
Trunk mounting: This is fine, but again, the pump needs to be close to the reservoir and gravity fed. Lengths of 20-25 ft of tubing to the nozzle are fine. We always recommend a #40060 solenoid for rear-reservoir mounting, including use of the 2.5 gallon reservoir (part number 40014).

16. Where can I mount the nozzle?

Pre- or Post- throttle body/carburetor?

Performance: It makes almost no difference. Before or after the throttle plate(s) wont change the effectiveness of the fluid. A given amount of fluid will absorb a given amount of heat, whether it is done more before or after the throttle plate really doesnt matter. 
Installation: It is usually easier to inject pre-throttle body in the intake tube. Easy access, no solenoid required (unless rear-mounting a reservoir). On a carburetor, it can actually be easier to use the #40050 carb spacer plate and a #40060 solenoid for a bolt-in installation. These components are included in our RT and MC series systems. 
In a blow-through carburetor setup with an air-box enclosure around the entire carburetor, injecting after the carburetor is preferable. 

Pre- or Post- Supercharger/Turbocharger?

Centrifugal/Turbo: (Procharger, Vortech, Paxton, Powerdyne, Rotrex, etc.) Never mount an injector nozzle before a centrifugal supercharger or turbocharger compressor. Sending fluid through the compressor wheel that spins anywhere from 50,000rpm to 250,000rpm can erode the leading edges of the fine aluminum, as well as serve to reduce the atomization. Instead of a fine mist, the compressor housing will create a river of fluid along the outside wall that means we get less benefit and use more fluid. 
Positive Displacement Supercharger: Roots style (B&M, Eaton, Magnuson, etc.) or twin screw (Lysholm, Kenne Bell, Whipple, etc.) Mounting the nozzle before this style of blower is perfectly safe and actually provides some additional benefits. The small amount of water-methanol fluid isnt harmful to any rotor seals or surfaces or coatings, and it helps to seal the clearances and condense the air some more, resulting in a more efficient output. Additionally, it keeps the rotors and housing MUCH cooler, which reduces heat transfer to the rest of the intake and air charge. 

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