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AEM Electronics Water/Methanol Injection Monitor System - Universal
AEM Electronics Water/Methanol Injection Monitor System - Universal
AEM Electronics Water/Methanol Injection Monitor System - Universal
AEM Electronics Water/Methanol Injection Monitor System - Universal
AEM Electronics Water/Methanol Injection Monitor System - Universal
AEM Electronics Water/Methanol Injection Monitor System - Universal

AEM Electronics Water/Methanol Injection Monitor System


Read 1 Reviews | Q&A
Part # 30-3020
msrp: $377.38
Ships within 38 days
Universal part

Features & Product Details

RallySport Direct carries a great selection of performance products and accessories from AEM Electronics.

Here, you are looking at the AEM Electronics Water / Methanol Injection Monitor System and Failsafe Device. This is the most advanced water/methanol failsafe device on the market. It actively monitors the injection system’s ENTIRE flow curve to compensate for failure under ANY condition, allowing you to use your water/methanol system with complete peace of mind. If you have a water/methanol injection system or are considering one, you will not find a more advanced failsafe device on the market than the AEM Water/Methanol FAILSAFE Device.

Additionally, it actively monitors the entire flow curve independent of pressure, continuously collecting flow vs. injection rate data so that any deviation from your established flow curve will trigger an alarm output that can be used to reduce boost or timing, change maps, add fuel, trigger a two-step or perform practically any action you choose to save your engine. It is PC programmable (with USB connectivity) which eliminates the guesswork when setting min/max threshold parameters. It features PC-based software and an auto-scaling flow map that simplifies set up and has an “Auto Set” feature that will create a baseline configuration. A video showing its ease of set up is on And it will work on virtually ANY water/methanol injection system that uses ¼” OD.



  • Can be used on virtually all water/methanol injection systems with either 1/4" or 4mm OD tubing
  • PC programmable with "Auto Set" feature that automatically creates a baseline configuration
  • Built-in warning lights inform the user of an alarm trigger
  • Actively monitors the entire water/methanol fuel injection curve to trigger an alarm event under any defined adverse condition
  • Internal data logger records all injection flow and alarm status data
  • Included high-tech analog gauge has black and white faceplates and bezels to match vehicle interior and is programmable for either 0-500cc/min or 0-1000cc/min flow ranges
  • Gauge alarm and backlighting are user-programmable to match the interior lighting 
  • Data analysis using AEM data software


    Brand: AEM Electronics
    Quantity: Kit
    Type: Failsafe/Flow Gauge
    Mfgr. Warranty: 1 Year
    Condition: New Product
    Return Policy:

    RallySport Guarantee - 30 Days

    Items that are covered under the RallySport Guarantee offer a 30 day no questions asked return policy.

    RallySport Guarantee items may be returned within 30 days of the original invoice date and must include all the original parts and contents for a refund.

    The RallySport Guarantee does not apply to products that have been modified, damaged, misused or abused. All returns require an RMA (Return Merchandise Authorization) Number, and freight charges are strictly non-refundable. For more information regarding our freight refund policy, please refer to our return policy page found HERE.
    WARNING: Cancer and Reproductive Harm -



    1 Reviews
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    The old saying... 6 years ago
    2out of 5stars

    My dad used to tell me all the time, The more extras it has, the more likely it is to have something fail. My kit did not work initially. After several firmware flashes and parts being exchanged, I discovered that the flow meter was assembled incorrectly from the factory. The customer support is good, so long as you don't work on your car on the weekends. The flow metering is good, and the software is easy to use. My AEM WM injection controller (V1) has started having issues now (about 2 months after installing the failsafe). While I don't blame the failsafe for the controller tripping up, it does not catch the fact that the WM Controller is messing up. So realistically, it is not functioning as a failsafe so much as just a flow meter. I had high hopes for this unit, but may convert to a different brand controller and failsafe because of the issues it has had. When it all works, it's great, but half the time when I start the car the failsafe or the controller will not be working. Usually it boils down to me having to shut the car off, wait 30 seconds and start it back up. As much as I love WM Injection and the flexibility it allows with tuning, I cannot recommend this particular product.
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    This Part Fits

    Universal Product
    This item is non application specific.
    Please verify compatibility before purchase. May require some modification for proper installation.