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JB4 Water/Methanol Injection (WMI) for Gen 2 G20 G22 B58 BMW

In stock


Make tremendous amounts of power on pump gas!

Water/Methanol/Alcohol injection commonly referred to as WMI allows you to make tremendous amounts of power on pump gas. The effect is similar to running 100 octane race gas or E85 fuel all the time with the additional cooling benefits allowing for more power than you can make on race gas or E85 alone. For those that don't have easy E85 access WMI adds a ton of power over pump gas, and for those running E85 WMI can still be very useful for its charge air cooling and fuel volume benefits. 

The key to a safe and effective WMI setup is tuning integration. The B58 BMS WMI kit integrates to the JB4 tuning system allowing for precise mapping based on boost, throttle position, engine speed, intake temperature, advance, gear, and other data elements available to the JB4 through its CANbus system. In addition, a pump flow signal is fed back to the JB4 allowing for a safe and smooth progressive boost mapping. If the tank runs empty or flow drops for any reason the JB4 will safely back down performance to avoid detonation. Boost is held low until WMI is properly flowing to avoid tip in knock common with non-integrated WMI setups. In addition WMI can be activated or disabled right from the JB4 Mobile app , will automatically disengage during traction control or safety map situations, and WMI flow data can be displayed via your JB4 Mobile logging device.

The BMS WMI kit includes our new 3.5 gallon integrated stealth tank, FSB JB4 Water/Methanol Injection (WMI) Controller, a high quality Aquatec water/methanol Injection (WMI) pump made to our specifications, BMS BM10 super atomizing water/methanol injection nozzle, high speed solenoid with leak-free compression fittings, 18' of steel braided line, 24" steel braided lines with AN fittings, an AN 90º pump fitting, inline filter, and all required wiring, brackets, and mounting hardware. 

This water/methanol injection (WMI) tank is a completely custom design that neatly hides away in the left side trunk cavity found in most G20 G22 & G80 M3 & G82 M4 BMW vehicles. The pump mounts directly to the back of the tank allowing for a quick, clean, and completely stealth installation. The bottom of the tank includes a rear sump allowing for consistent performance even as the tank drains. Includes 2-way vented black plastic cap, a compression pump feed fitting, and 12" of vinyl WMI line for the non-pressure side of the WMI pump. Our unique tank can also be purchased separately here.

We also offer an optional upgraded blue billet tank cap with 1-way check valve available here.

This kit includes a BM10 (10 GPH or approx 750 ml/min) injection nozzle suitable for most B58 applications. Mounting requires an 1/8" NPT port or our throttle plate adapter.

Optional plug and play Water/Methanol Injection (WMI) adapter for Gen 2 B58 BMW motors

We've designed this plug and play adapter for quick installation and removal of BMS dual nozzle water/meth kits without having to replace the factory charge pipe. Simply unscrew three bolts, insert the CNC machined adapter with integrated o-ring in place between the throttle body and intake manifold, and tighten the included longer length bolts, to allow mounting of two meth nozzles with a perfect seal. 

Vehicle Fitment

BMW 3 Series
• 2020-2023 G20 B58 BMW M340i including xDrive

BMW 4 Series
• 2021-Present G22 BMW M440i including xDrive (requires cutting of trunk liner)

What's included
• (1) G20 Stealth Tank and Mounting Hardware
• (1) FSB JB4 Water/Methanol Injection Controller
• (1) Aquatec water/methanol Injection pump
• (1) BM10 Water/Methanol Nozzle

• 18' of steel braided hose (straight and 90º fitting) 
• 2' of steel braided hose (straight and 90º fitting)
• 18" of PTFE line (tank to pump)
• (1) AN to push fitting  (pump to solenoid)
• (1) Solenoid
• (1) Gen 2 B58 billet throttle body adapter (optional)
• (-) Negative and (+) Positive wire
• (7) wire wire nuts
• (1) inline fuse holder

Toyota Supra Wheel Spacers Install Guide BMS Burger Motorsports 10mm 13mm 15mm

G20 G80 BMW M3 M340i methanol tank

Optional: Gen 2 B58 Throttle body adapter

B58 throttle body adapter

bmw m340i methanol injection

JB4, BMS intake, BMS charge pipe, BMS WMI, ~93 octane, factory flash

BMW B58 M340i methanol injection dyno

Optional upgraded blue billet water/methanol injection (WMI) with 1-way check valve available here.

B58 BMW Burger Motorsports Water Methanol injection Kit Billet Tank Cap

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We have a 30-day return policy on all items, which means you have 30 days after receiving your item to request a return. To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase. To start a return, you can contact us at sales@palenonperformance.com. If your return is accepted, we’ll send you a return shipping label, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted. You can always contact us for any return question at sales@palenonperformance.com. Damages and issues Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right. Exceptions / non-returnable items Certain items cannot be returned, Burger Motorsports does not allow returns, custom products (such as special orders or personalized items). We also do not accept returns for hazardous materials, flammable liquids, or gases. Please get in touch if you have questions or concerns about your specific item. Unfortunately, we cannot accept returns on sale items or gift cards. Exchanges The fastest way to ensure you get what you want is to return the item you have, and once the return is accepted, make a separate purchase for the new item. Refunds We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method. Please remember it can take some time for your bank or credit card company to process and post the refund too.

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