AEM V3 1.15 Gallon Water/Methanol Injection Kit (Forced Induction Kit)

This is AEM's New V3 of the Water/Methanol Kits, this kit is designed for forced inductions vehicles running up to 35 PSI of boost. The kit includes an on-board MAP sensor with a molded-in nipple for a boost hose pickup.

Water/Methanol Injection kits can help you achieve a lot of goals that you couldn't achieve otherwise. Running water/methanol injection not only cools the intake charge, making the air more dense, which makes more power through the engine...but it also has another affect that helps. Running water/methanol injection with proper tuning, can allow you to run a more aggressive tune (more boost/timing) on the same fuel than you would be able to with out it. 

Lots of customers will add a water/methanol kit to their turbo car to allow them to run more boost on pump gas without having to move up to using race fuel. The AEM kit is high quality, low cost, and works perfectly. We use it in several of our own cars, and many customers cars here at the shop. 


We like that the AEM kit comes complete with everything you need, detailed instructions, and is easy to use.

Water/methanol injection for gas engines is a proven means for effectively reducing engine inlet air temperatures and suppressing harmful detonation on forced induction and high performance naturally aspirated race engines. This allows racers to reliably increase boost and advance ignition timing—without using high-octane racing fuel—for power gains of up to 20%. AEM’s Water/Methanol Injection Systems utilize the most robust hardware combined with more advanced features than any other comparably priced water/methanol system.

The on-demand progressive controller in AEM’s Boost Dependent PN30-3300 Water/Methanol Injection kit bases injection flow on manifold pressure using an on-board MAP sensor (up to 35 PSI of boost) to ensure the proper amount of water/methanol injection at all points along an engine’s power curve.

We then tested a V3 250cc injector against a V2 500cc injector to see if the larger V2 injector would improve cooling speed. The V2 500cc injector achieved nearly identical cooling speed as the V3 250cc injector, but it required almost 44% more fluid to achieve the same cooling. Less fluid used means fewer refills of your WMI tank and less money spent refilling it. Using the V2 500cc nozzle with a one-gallon tank, you will get close to 7 minutes and 50 seconds of run time at full pressure. Using the V3 250cc nozzle with a one-gallon tank, you will get 13 minutes and 30 seconds of run time at full pressure.

AEM’s engineers spent extensive time developing the controller’s flow control strategy for a more linear flow output delivery. This means that the flow delivery better matches an engine’s need for water/methanol injection, which further optimizes charge air cooling and detonation control.

The new controller design features large, turn-resistant knobs and larger numbering to easily set accurate start and full activation points, with covered status LED and test buttons for added splash resistance. A plug is integrated into the controller housing for mating to the redesigned wiring harness’s positive-lock connector. The Boost Dependent controller housing has a molded-in, barbed nipple to accept a boost hose and a wiring legend on the back, integrated fuse and molded mounting tabs.

AEM’s Boost Dependent Water/Methanol Injection kit’s wiring harness is terminated with a positive-lock connector on one end and has color-coded wires to ease installation. Both the power and ground wires for the pump are included in the harness which simplifies the wiring process and eliminates any chance of the pump accidentally activating from a short in the system. An additional wire is included for adding an optional on/off solenoid to stop fluid flow when the system is inactive.


AEM’s Boost Dependent, PN 30-3300 gasoline Water/Methanol Injection System’s compact 1 gallon tank includes a high tech conductive low fluid level indicator with a positive lock connector and color matched wires to the wiring harness.

• Boost Dependent controller features on-board MAP sensor with large adjustment knobs, integrated plug for harness connection, integrated fuse, covered status light and test button for enhanced splash resistance and mounting tabs
• Wiring harness is terminated with a positive-lock connector on one end with color-coded wires to ease installation, power and ground wires for the pump and additional wire for optional on/off fluid solenoid
• “Boost Safe” failsafe output included (for complete failsafe under all conditions, see Water/Methanol Failsafe Device)
• Internally-bypassed water/methanol injection pump does not cycle on an off and provides quiet, smooth operation. It features robust construction including integral hose fittings, EPDM seals and a Santoprene diaphragm that provides consistent and reliable fluid delivery
• Precision-machined billet-aluminum injector with integral check valve
• Three interchangeable injector nozzles to cover a wide variety of HP levels (250cc/min, 500 cc/min & 1,000cc/min)
• 1.15-gallon tank with anti-starvation reservoir, integral conductive low-fluid sensor and positive lock connector (tank-less systems available)
• 20 feet of Nylon injection tubing included
• LED dash light for system status and low fluid warning

Legal in California only for racing vehicles which may never be used upon a highway.

Important Safety Notice Regarding Methanol

AEM strongly recommends that users never exceed a 50% methanol concentration when using any AEM Water Methanol system or component.