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WMI Stage 4+ PWM


Water/ Methanol Injection Kit benefits:

  • Decrease the manifold temperature.
  • Prevent from melting the pistons by decreasing EGT.
  • Increasing the total number of octane prevents knocking.
  • Increase dynamic compression.
  • Increase in combustion efficiency.
  • Reduces carbon monoxide (CO) emissions.
  • Reduces carbon dioxide (CO2) emission.
  • Reduces NOx emissions.
  • Reduces HC emissions.

Water-Methanol Injection Kit features:

  • When the pump starts, the led turns on and you can set the desired level.
  • The kit has the latest technology and digital equipment.
  • Electronically controlled pump controller.
  • All parts are produced from methanol durable materials.
  • Easy installation with special plugs.
  • Optional transfer pump offers up to use.
  • Optional horizontal float switch.

Instruction Manual

Additional information

Stage 4+ PWM: The kit is controlled via a Standalone ECU. You can program the system based on TPS, MAP, or Engine Load 2d or 3d injection maps. The flow can be a single-stage, dual-stage, or progressive injection.

The water/ Methanol Injection pump has no pressure cut-off switch to eliminate oscillation/pulsation. Internally bypasses for a smooth constant even flow at the nozzle.

The new integrated solenoid valve and the nozzle assembly offer 100% safety for all injection systems utilizing a rear-mounted reservoir, injection points under vacuum, or installs where the injection nozzle is lower than the water-methanol reservoir. The solenoid fits the nozzle between the pump and injection point and locks fluid in place when not in use adding safety and peace of mind to any injection system. The solenoid-mounted nozzle works in an injector style. Because the reaction time is fast.

All metal equipment has the durability to corrosion of methanol and water, which constitute corrosion impact-resistant nickel-plated brass, brass, and EPDM grade plastic material.

All of our products are guaranteed for 2 years against the fabricated problem from the date of receipt by you.

Nozzles have a flow rating of your choice:

95cc / 125cc / 157cc / 189cc /  220cc / 252cc / 283cc / 315cc / 378cc / 378cc / 440cc / 504cc / 567cc / 630cc / 755cc / 880cc / 1000cc / 1130cc / 1260cc / 1575cc / 1890cc / 2200cc

1.5 GPH | 2 GPH | 2.5 GPH | 3 GPH | 3.5 GPH | 4 GPH | 4.5 GPH | 5 GPH | 6 GPH | 7 GPH | 8 GPH | 9 GPH | 10 GPH | 12 GPH | 14 GPH | 16 GPH | 18 GPH | 20 GPH | 25 GPH | 30 GPH | 35 GPH

Nozzles have a flow rating of your choice:

100% Water:  10-15% Water/ Fuel ratio or 0.5-1cc per HP

%50-50 Water-Methanol: 15-20% W-M/ Fuel ratio or  1-1.5cc per HP

100% Methanol: 20-25% Methanol/ Fuel ratio or 1.5-2cc per HP

​Please indicate which nozzle size and hose color you prefer before the ordered item. If you don’t specify the size, we will send you a 252 ml/min (4 GPH) nozzle and Red Hose.


  1. High-Pressure Diaphragm pump
  2. 2 x 3/8th NPT to ¼” compression type fitting
  3. Nozzle
  4. Nozzle mounting bung
  5. 40-micron stainless steel filter
  6. Filter nut
  7. Solenoid valve
  8. 2 x 1/8” NPT to ¼” compression type fitting
  9. Controller with wiring loom
  10. Plastic tank
  11. Plastic tank cap
  12. 20 FT/ 6 meters ¼” OD. injection hose
  13. 2*Fully insulated female cable connector
  14. 2*Fully insulated butt cable connector
  15. Fully insulated Ground cable connector
  16. LED holder
  17. 5*zip tie
  18. 2*screw and 2*washer for tank
  19. 4*screw and 4*washer for pump
  20. 3d sticker
  21. Stickers
  22. Installation manual
Weight 3 kg
Dimensions 30 × 25 × 12 cm
Car Brand

Acura, Alfa Romeo, Aston Martin, Audi, Bentley, BMW, Bugatti, Buick, Cadillac, Caterham, Chery, Chevrolet, Chrysler, Citroën, Cupra, Dacia, Daewoo, Daihatsu, Dodge, DS Automobiles, Eagle, Ferrari, Fiat, Ford, GAZ, Geely, Hennessey, Honda, Hyundai, Ikco, Infiniti, Isuzu, Jaguar, Kia, Koenigsegg, Lada, Lamborghini, Lancia, Lexus, Lincoln, Lotus, Maserati, Mazda, McLaren, Mercedes Benz, Mercury, MG, Mini, Mitsubishi, Morgan, Moskwitsch, Nissan, Oldsmobile, Opel, Other, Pagani, Peugeot, Plymouth, Pontiac, Porsche, Proton, Renault, Rolls-Royce, Rover, Saab, Saturn, Seat, Skoda, Smart, Subaru, Suzuki, Tata, Toyota, Volkswagen, Volvo

Engine cc

1000cc – 1600cc, 1601cc – 2500cc, 2501cc – 4000cc, 4000cc +

Fuel Type

Naturally Aspirated Gasoline, Forced Induction Gasoline

Hose Color & Type

Nylon Blue, Nylon Red, PTFE

Tank Size

No Tank, Small Size 3 Lt/ 0.8 Gallon, Standard M Tank 5.9 Lt/ 1.58 Gallon, Low Profile 5 Lt/ 1.32 Gallon, L Tank 10 Lt/ 2.64 Gallon, XL Tank 20 Lt/ 5.28 Gallon

Mounting Method

Standard Mount (For vehicles with large mounting space), Remote Mount (For vehicles with narrow mounting space), V Engine (attached to solenoid with double nozzle hose)