Keep your WMI system in top condition by filtering out potential contaminants before it becomes a problem
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Allows your JB4 to control a WMI pump and solenoid for dynamic progressive flow mapping!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms For most JB4 applications.
Brand:
ES#:
4715229
Mfg#:
FSB-UNI
In Stock
Limited Qty Sale
$153.00
This product was last offered at the strikethrough price on 05-02-2026
Enable flex-fuel features on your tuned BMW with this plug and play kit! Compatible with MHD or ECUTEK tunes and works with the stock or TU High Pressure Fuel Pump
ALL SALES FINAL. ITEMS MAY BE DAMAGED OR MISSING COMPONENTS. PLEASE SEE IMAGES BEFORE PURCHASING. Want To Haggle? Give Us A Call Or Chat To Make An Offer On This Product! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Brand:
ES#:
5457709
Mfg#:
ECAGB58S58AT
In Stock
Limited Qty Sale
$490.00
This product was last offered at the strikethrough price on 05-14-2026
Plug-and-Play flex fuel kit for your BMW!
ALL SALES FINAL. ITEMS MAY BE DAMAGED OR MISSING COMPONENTS. PLEASE SEE IMAGES BEFORE PURCHASING. Want To Haggle? Give Us A Call Or Chat To Make An Offer On This Product! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Brand:
ES#:
4899202
Mfg#:
BM3FFKTF55
In Stock
ON SALE!
SAVE 12%
$599.00
This product was last offered at the strikethrough price on 05-02-2026
Red High Temp Nylon Tubing, Quick-Connect Fittings
ALL SALES FINAL. ITEMS MAY BE DAMAGED OR MISSING COMPONENTS. PLEASE SEE IMAGES BEFORE PURCHASING. Want To Haggle? Give Us A Call Or Chat To Make An Offer On This Product! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Brand:
ES#:
5425701
Mfg#:
SN0-20010
In Stock
ON SALE!
$520.99
This product was last offered at the strikethrough price on 05-02-2026
Make tremendous amounts of power on pump gas! Everything you need to get started with WMI in one convenient kit. JB4 compatible, comes with your choice of tank color.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Heavy-duty yet compact tank that is compact and flexible allowing for a wide range of mounting on any flat vertical surface in the trunk.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
The ultimate fueling solution for your S58 powered BMW. Six supplemental low-pressure fuel injectors allow fueling of up to 1000+ whp using water/methanol blends. JB4 integrated!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Know your exact ethanol content in real-time via the Fuel-It! or JB4 mobile app on your smartphone or tablet. For non Fuel-It! brand port injection configs.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Know your exact ethanol content in real-time via the Fuel-It! or JB4 mobile app on your smartphone or tablet.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Know your exact ethanol content in real-time via the Fuel-It! or JB4 mobile app on your smartphone or tablet. For stock HPFP/no port injection configurations.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Engineered to bridge the gap between "universal" fitment and OE-level reliability, these injectors are drop-in replacements that eliminate the guesswork of fuel system upgrades.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms For Custom Applications - Will require additional tuning or modifications.
When your fuel system is at its limit, you can't make more power since your stock fuel system isn't able to deliver enough fuel. Not only can this create 'lean' conditions in the mixture, but it means you're leaving power on the table. Upgrade your fuel system with our performance fueling options from injectors to management and even methanol and other additives.
