• 15+ Years of Performance Parts, Tuning & Installation

Snow Performance Stage 2.5 Boost Cooler Water-Methanol Injection Kit for 2005 - 2021 Subaru WRX STi

  • Backed by real installs and tuning experience at FAST of West Chester

Everyday Low Price:

$892.97
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Snow Performance has combined performance, quality, and easyinstallation in this new water-methanol injection system engineeredspecifically for your 2005+ Subaru WRX STI equipped with the 2.5L engine.Increase your pump gas octane by 25 pointsand make more power efficiently with a cooler running motor! Complete withcustom water-methanol injection throttle body spacer plate, braided stainlessline, and 4AN fittings offering un surpassed reliability and ease of install.The Stage 2 uses a progressive VC-50 controller (ISO 9001 Manufactured) thatproportionally injects more or less according to boost pressure. Start and fullpoints are adjustable for engagement and delivery curve to match what theengine requires. Proportionally injecting according to boost pressure gives anaccurate delivery of water-methanol and allows cooling and performanceimprovements over a wide range for improved drivability. The VC-50 controller(52mm gauge) offers the functionality of a boost gauge and water-methanolcontroller all in one! Highlighting a 7 color (Blue, White, Red, Yellow,Orange, Purple, Green) OLED screen displaying boost, percentage of injection,low level, secondary nozzle activation, prime button, and 4 fault codesdirectly on the screen you can tailor the controller to match your OEM gaugesor mix and match up to two colors.

Benefits:

  • Made In USA
  • Cooler Denser Air Charge
  • Achieve 116 Octane Quality Fuel From Pump Gas
  • Safely Run More Boost & Timing
  • Cleans Engine Combustion Of Carbon Build Up
  • Progressive Water-Methanol Injection

Features:

  • Black Hard Anodized Metal Fittings (100% Methanol Resistant)
  • Industry Leading 300 PSI UHO Pump For More Pressure Than The Competition
  • 52mm Boost Gauge and Adjustable Progressive Water-Methanol Controller All in One
  • 7 Color OLED Screen Displays Boost, Injection Percentage, Injection Error (s), Prime Button, Second Stage Activation, and Low Level
  • New Prime Feature Ensures Water-Methanol In Lines With Push of A Button
  • 4 Fault Modes (Clogged Line/Broken Line/Pump/Solenoid)
  • Level Switch Upgrade
  • 2.5 Gal Trunk Mount Tank
  • 2 Proprietary Hypersonic Nozzles For The Best Atomization On The Market

 

  • Earn FAST points on this part!
  • Backed by real-world installs
  • FAST WC Team Approved
Snow Performance Stage 2.5 Boost Cooler Water-Methanol Injection Kit for 2005 - 2021 Subaru WRX STi

$892.97

Why Drivers Choose FAST of West Chester

  • I can't recommend this place enough. Being able to trust a shop in the performance world is big. The 2hr drive to get there, is worth knowing the job will be done right. Very happy to have found this shop, to
    support my builds going forward.

    Donald Wojnar

  • I recently had the pleasure of working with FAST of West Chester for some performance upgrades on my 2022 WRX, and the experience was nothing short of exceptional. I opted for a Borla S-Type exhaust and Cygnus Coilovers, and the team at FAST nailed the installation, fitment, and setup to a T.

    Adam Cranston

  • The team at FAST are excellence in every way. First, I consulted with Dave on mods for my HPDE track car. He listened and advised me on the best parts & mods to achieve my goals. He was patient & gave me space to research the options presented & worked with me through several changes before we built. Second, the build execution was flawless, proper heat shielding, bracing and poly everywhere. All components worked as advertised.

    Bryce Budd

  • This place has been my go to shop for all things Subaru. From simple service to performance parts and tuning, they have been top notch.

    William Brunell

  • Excellent shop. They installed a Cobb Stage 2 DP and Whiteline Sway bars and end links on my 2013 WRX. The work was done right and clean. The estimate was accurate. They were very knowledgeable, friendly and gave me the straight scoop on exactly what I was getting for the money
    and what I needed to get where I want to be with it. I'd recommend them
    to any car enthusiast.

    Devin Greco

Does it come with a warranty?

Most products we carry include a manufacturer warranty. Since we work with top performance brands, warranty coverage can vary by product. If you have questions about a specific item, reach out — we’re happy to help.

Do you offer installation help or advice?

Yes — we don’t just sell parts, we install and tune them too. FAST of West Chester is a real performance shop, and we’ve worked hands-on with many of the products we carry. If you have questions about fitment, installs, or building your setup, our team can point you in the right direction.

How fast is shipping?

Many of our products ship the same day or next business day, depending on availability. We work hard to get parts out fast so you can get your build moving without delays.

What’s your return policy?

Returns for exchange or refund are accepted within 30 days of receiving your order. Items must be in new, unused condition and in original packaging. If you have any questions, our team will help make the process easy.

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