BMS Water/Methanol Injection (WMI) Kit - Gen 2 B58

Make tremendous amounts of power on pump gas! Everything you need to get started with WMI in one convenient kit. JB4 compatible! ​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 on 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 and will automatically disengage during traction control or safety map situations. WMI flow data can be displayed via your JB4 Mobile logging device. 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. 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 the throttle plate adapter. What's included (1) G20 Stealth Tank and Mounting Hardware (1) FSB JB4 Water/Methanol Injection Controller (1) BMS water/methanol Injection pump (1) BM10 Water/Methanol Nozzle (1) 12.5' of steel braided hose (straight and 90º fitting) (1) 2' of steel braided hose (straight and 90º fitting) (1) 18" of PTFE line (tank to pump) (1) Billet 1/4 push male to -4AN male 90º (pump out) (1) 1/4 push male to female 90º (pump in) (1) Solenoid (1) 15' (-) Negative black wire (1) 15' (+) Positive red wire (7) wire wire nuts (1) inline fuse holder
T#: 21308437 | Part#: WMIK-B58G2
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Burger Motorsports BMS Water/Methanol Injection (WMI) Kit - Gen 2 B58 WMIK-B58G2
BMS Water/Methanol Injection (WMI) Kit - Gen 2 B58 - With Black Tank
Burger Motorsports - Corporate Logo
T#: 21275609
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Part#: WMIK-B58G2-B
Availability:
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Qty: 1
Burger Motorsports BMS Water/Methanol Injection (WMI) Kit - Gen 2 B58 WMIK-B58G2
BMS Water/Methanol Injection (WMI) Kit - Gen 2 B58 - With White Tank
Burger Motorsports - Corporate Logo
T#: 21275607
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Part#: WMIK-B58G2-D
Availability:
Ships Directly From Supplier
Est. Ship Date:
on Jul 14, 2026
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Burger Motorsports BMS Water/Methanol Injection (WMI) Kit - Gen 2 B58 WMIK-B58G2
BMS Water/Methanol Injection (WMI) Kit - Gen 2 B58 - With Black Tank and WMI Throttle Body Spacer
Burger Motorsports - Corporate Logo
T#: 21275606
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Part#: WMIK-B58G2-A
Availability:
Ships Directly From Supplier
Est. Ship Date:
on Jul 14, 2026
Lifetime Replacement
This product is backed by our
Lifetime Replacement Program! Read more here
$898.00
Qty: 1
Burger Motorsports BMS Water/Methanol Injection (WMI) Kit - Gen 2 B58 WMIK-B58G2
BMS Water/Methanol Injection (WMI) Kit - Gen 2 B58 - With White Tank and WMI Throttle Body Spacer
Burger Motorsports - Corporate Logo
T#: 21275605
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Part#: WMIK-B58G2-C
Availability:
Ships Directly From Supplier
Est. Ship Date:
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Lifetime Replacement
This product is backed by our
Lifetime Replacement Program! Read more here
$898.00
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Burger Motorsports BMS Water/Methanol Injection (WMI) Kit - Gen 2 B58 WMIK-B58G2
BMS Billet Water/Methanol Injection Tank Cap With Safety Check Valve
Burger Motorsports - Corporate Logo
T#: 20815185
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Part#: BMSWMITC
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Burger Motorsports BMS Water/Methanol Injection (WMI) Kit - Gen 2 B58 WMIK-B58G2
SnowPerformance Boost Juice - 4 Gallons - (NO LONGER AVAILABLE)
SnowPerformance - Corporate Logo
T#: 397631
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Part#: 40008KT
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$49.48
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BMS Water/Methanol Injection (WMI) Kit - Gen 2 B58
$799.00