• Adjust the Voltage Ramp In / Out time correct & eliminate fuel pressure spikes
  • Single Or Dual Input/ Output Versions
  • 4 models available for complete coverage
  • LED to visually monitor the status Of your powerMAX Boost-A device
  • New Enables 0-5V or Optional Internal Boost
  • Works on all vehicles
  • Domestics & Imports
  • Compatible with all 12V or 16V  battery systems
  • Plug & Play Versions
  • Simple installation

Since 2010, PowerMAX has set the standard for Boost-A devices. PowerMAX combines the best of two worlds into one product Clean continuous voltage & the highest available amperage. PowerMAX Version 2 offers single or dual outputs along with multiple new features.


  • Choose the Plug & Play version or splice into your existing fuel pump, ignition system, intercooler pump or cooling fan via included installation kit.


  • Industrial Black Heatsink With four mounting tabs.


  • LENGTH: 47/8"
  • WIDTH: 3 7/8'
  • HEIGHT: 27/16"


  • High performance Digital Voltage Booster-Regulator
  • Available with either Single or Dual Inputs & Outputs
  • Trigger boosted output voltage via Ground Or 0-5V sensor
  • Optional Trigger via adjustable Internal Boost Sensor


Continuous Output Rating: 31 AMPS @
peak Output Rating:             38 @ (60 seconds)

Input voltage:   9.5V -19V DC
Input Fuse:        80 AMPS (dual) or 40 AMPS (single)

Maximum Voltage output For each Model:
FuelMAX:          22V or 18V (dual range adjustable Output)
SparkMAX:       25V (adjustable output)
SparkMAX Race: 31 V (adjustable output)
InterC001MAX:  16V (continuous output)
FanMAX:             15V (continuous output)

  • Compatible with all 12V or 16V battery
  • systems (9.5Vto 19V)

When PowerMax is not boosting output voltage the voltage drop across the unit is only: 0.05V

  • Adjust the output voltage via the knobs on the front panel,
  • Use the dip switches to save the voltage setting.
  • Optional remote mounted voltage control knob overrides
  • saved voltage setting and can be adjusted from the drivers seat.
  • Adjustment range: 14.5V
  • 100% = 18V, 22V, 25V or 31V (output model specific)

Status LED:

  • Anytime the unit has power, the green LED will glow continuously.
  • When boosting the output voltage, the green LED will flash slowly.
  • While the output voltage is being adjusted via the front panel the green LED will flash quickly.
  • After the front panel voltage values have been saved, the green LED will twinkle.

Adjustable Voltage Ramp-In / Ramp Out Model Specific:

  • Three different ways to Ramp-in and Ramp-out boosted voltage.
  • Ramp-in the boosted voltage over time (Ground, or 0-5V trigger).
  • Externally adjustable via dip switch settings.
  • Time Settings: O, 0.25, 0.50 and 0.75 seconds
  • Ramp in the boosted voltage based on the 0-5VVoltage Trigger,
  • Externally adjustable via dip switch settings.
  • Range Settings: 0V, 0.5V, 1.0V and 1.5V
  • Use the optional internal boost sensor to ramp in the boosted
  • voltage based on manifold boost pressure (psi).
  • Externally adjustable via dip switch settings.
  • Range Settings: OV, 4psi, 8psi and 12psi

Installation Kit Included:

  • Enable Wire harness, adapter fitting (1/8th NPT to barb)
  • Hobbs switch preset @ 5psi (user adjustable 3-7psi), solder
  • heat shrink ring terminals, heat shrink wire splices, tie straps
  • self-tapping screws, vacuum line, 1/4" to 3/1 6" vacuum tee
  • 3/16" vacuum tee, 3/16 to 3/8" vacuum tee and 30 amp mini-fuse.

Note: The installation kit is specific to each PowerMAX model

Brand: JMS
UPC: 021201229298

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  • 2010-2020 Chevrolet Silverado 1500
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  • 2014-2017 Chevrolet SS



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