Increasing the power of an engine is a goal of any gearhead. Deny that fact, and we'll take your man card. Whether your preference is vintage muscle or the new offerings, increasing the power output of your ride is something that has built multi-million dollar businesses. One of the leading concerns though when increasing an engine's power is breaking something. Especially with newer-model cars, many folks are afraid that adding a power adder could cause something to break, and the cost to rebuild could be enormous. For some though, increasing engine power is an ever-expanding goal, breakage be darned. Lucky for us, we were contacted by Snow Performance, and were informed that Razor's Edge Motorsports was about to increase the power of a supercharged, 6.1-powered Challenger by adding one of Snow's water/methanol injection kits.

Although misunderstood by many, water/methanol injection remains a popular upgrade within the high performance automotive market. For many, it's hard to believe that injecting water that is blended with anything into an engine in the quest for more power can actually be a good idea. But the truth is, water/methanol injection is beneficial to all forcibly inducted and naturally aspirated engines—if done properly.

The process involves injecting water and methanol directly into the engine's incoming air and fuel mixture. This injection occurs somewhere before the carburetor or throttle body. But the effect of gaining power by injecting this blend is not simply a by-product of the mixture alone. Methanol contains high-octane properties, and that high octane along with the cooling properties of both the methanol and water, lower the intake temperature. Depending on the amount of water/methanol injected and the type of mix used (pure water, pure methanol, or a mix of the two), substantial gains in actual octane can be achieved. This has the potential to make 91-octane pump gas seem like 105-116 octane racing fuel. Wouldn't you be happy eliminating your dependency on expensive race fuels that can cost upward of $8-$12 per gallon? Although the mixture doesn't actually increase the power, this additional octane and cooling effect enables you to run more aggressive timing (or boost) without increasing the chance of detonation. Depending how spark-knock limited the application, this tuning capability has the potential to increase horsepower and torque output by 10 to 25 percent when properly used.


1. The first thing we needed to do for the install at Razor's Edge was get access to the factory windshield washer bottle. By removing the passenger-side inner fender, we were able to easily remove the bottle.

2-3. The reason we removed the factory washer bottle, was so we could install a fitting that we could connect the Snow pump in order to pump the water/methanol mix. In this application we used the factory washer tank as opposed to adding another tank. The washer fluid is still usable as a washer fluid, and an added bonus is that when the mixture gets low the dash light lets you know.

4. Mounting the pump below the level of the tank eases the effort the pump uses to move the fluid.

5-6. Next came the wiring. Follow your specific instructions for this task. We routed everything nicely behind and under panels for a nice clean, finished look.