AEM Stage 2 WMI

Starting at: $410.00USD

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** The price for this kit includes free shipping within the continental USA**


Stratified Notes:

The stage 2 AEM WMI is a great kit for those who want a little more control than the Snow Performance Stage 1 kit . Progressive controllers like this AEM unit are needed once you start adding a good amount of fuel to the engine via WMI (10+ GPH nozzles on 100% methanol) making this system a good choice for most applications where a WMI failsafe is not desired. The controller can be wired into the engine bay and doing so means that there are no gauges, wires, or hoses to run into the cabin making for a clean install. That being said, the kit comes with enough hosing / wiring to be instaled in the cabin.

Why WMI?:

Depending on where you are in your modifications path your need for WMI will change. Primaily there are three major benefits that a WMI system provides:

1) Cooling the Intake Charge: As the Water-Methanol mixutre is sprayed into your intake it absorbs energy from the hot air. Since energy and heat are one in the same the result is a cooler intake charge which basically benefits every aspect of a modified car. Cooler air means lower cylinder temperatures and denser air, with lower cylinder temperatures the vehicle is less likely to knock. You can read more about the benefits of cooling the intake charge here:

2) Increased Octane: Aside from supressing knock by lowering the temperature of the incoming air, water-methanol injection goes one step further to keep knock at bay. By injecting methanol you are taking advantage of methanol's high octane rating, and this gives a results similar to that of mixing E85 in your tank. If you live in one of the many areas with less than optimal fuel WMI is an excellent choice for getting the most from your modifications. 

3) Increased Fueling: Both the Mazda DISI and Ford EcoBoost motors feature high pressure direct injection fuel systems. These systems are great for efficinecy but finding injectors and replacement pumps is often very hard or impossible. Both cars can be taken to around 400whp before hard to find or expensive fuel components are needed. In order to get past these power levels you will need an external fuel source and Water-Methanol injection is the simplest method to get this fueling while also increasing cooling and octane. 


Below is a comparison of how much power we were able to safely gain by adding the WMI kit to our GTX2867 powered Focus ST on the stock fuel system and 92 octane pump fuel. You will need tuning to take advantage of the WMI sysetm and we are more than happy to help you out with that!. Just Contact Us!

AEM prepared an informative video on how WMI works in a gas engine to make more power:


For ultimate safety we recommend pairing a Water-Methanol kit that has a failsafe with a Statified Guardian Angel. By connecting the Guardian Angel trigger wire to the Failsafe trigger your motor will be saved from a WMI system failure. This is especially important if you rely on your WMI system to provide fueling or if your tune is too aggressive for the base fuel.



**If order needs to be shipped outside of the USA, additional shipping charges will be calculated and added after the purchase**




  • Model: AEM_WMI_30-3302/00
  • Shipping Weight: 3kgs
  • 3 Units in Stock

This product was added to our catalog on Thursday 11 June, 2015.