FuelMAX™ fuel pump voltage boosters feature exclusive JMS technology.  They are designed to provide up to an 85% increase in fuel delivery, without damaging the OEM fuel pump.

FuelMAX™ provides the highest output of voltage and amperage. We utilize true 40-amp and 80-amp input fuse configurations. Our activation options, allow you to choose the device that works best for your specific vehicle installation.

JMS was the first company to produce a plug and play fuel pump voltage booster for the Dodge/Chrysler Demon/Hellcat, Mustang, Shelby GT350/GT500, F-150/SVT Raptor, and others.

Choose our plug and play option, for the quickest and easiest installation. Plug and Play connectors connect FuelMAX™ directly to the FPDM (fuel pump driver module) and the activation occurs via the pedal position sensor (PPS). Our Plug and Play solution eliminates running wires through the firewall altogether.

PowerMAX® FuelMAX™ utilizes a proprietary heat-sink enclosure and features 10 gauge heavy-duty wiring and either 40 or 80 amp fuses along with a host of new and innovative features to further improve the user experience. The maximum output voltage range is user selectable (up to 22v!) and is controlled by a knob in the faceplate, or via the optional in-cabin over-ride control knob that adjusts voltage on the fly.

JMS is the only company to offer user-adjustable voltage ramp in and ramp out rates. This feature allows the user to correct and eliminate fuel pressure spikes that can occur when fuel pump voltage is rapidly increased or decreased. You now have maximum control over the voltage ramp-in and ramp-out rate and depending on model, voltage can be controlled via time or boost pressure or it can be controlled via time or monitored voltage, and it's easy to setup via simple to use knobs and switches.

JMS PowerMAX® FuelMAX Voltage Booster Kits are shipped complete with everything you need for installation. Included in the kits; FuelMAX device, heavy-duty OEM-grade wiring harness, user adjustable Hobbs pressure switch, 1/8" NPT adaptor fitting, wiring terminals, wire splices and heat shrink, solder, vacuum line and tees, mounting hardware, and 40 amp fuses.

For a fully automatic option check out our FuelMAX EZ- More Fuel for EZ Power! 

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