JMS Fuel MAX EZ Street Legal Performance Installation Guide
- June 3, 2024
- JMS
Table of Contents
INSTALLATION GUIDE
WHAT’S IN THE BOX
- FUELMAX EZ Unit
- Fuel Pump Driver Module Harness
- 4x Mounting Screws
- 1x Grounding Screw
- 6x Wire Ties
· Installation Manual
STEP 1
Locate the fuel pump driver modules
Verify that the vehicle is turned off (no key in ignition).
Locate the Fuel Pump Driver Module or Modules
The Fuel Pump or FPDM is typically located in the trunk or possibly in or near
the fuel tank.
FPDM and FPDM connectors may not match the picture shown
Typically newer cars (2000-up) utilize a fuel pump driver module to drive the
fuel pump. FuelMAX boosts the voltage to the fuel pump driver module and this
increases the fuel flow from the fuel pump.
STEP 2
Connect the JMS Plug & Play Harness
Install the Plug & Play Fuel Pump Driver Module Harness in-between the factory
harness and the fuel pump driver module.
Connect the three-pin connector to the FuelMAX EZ main harness
connector.
To remove the OE Pump Driver Plug you press and hold the tab and remove the
connector plug.
STEP 3
Secure the Ground Wire
The Black Wire is pre-crimped with a yellow ground ring.
Terminate the lack Wire to a factory chassis ground point.
STEP 4
Upgrade the Fuel Pump Fuse
Most vehicles have a single pump and a single fuse.
Locate and replace fuse or fuses that provide +12v to the fuel pump driver
module(s). Replace the stock fuse or fuses with 30amp versions. ’07 – ’10
Shelby Vehicles utilize two fuses.
’07 – ’12 Shelby GT500 vehicles require the JMS
Fuel Pump Wiring Upgrade (p/n: JCA105732)
’11 – ’12 Shelby GT500 vehicles utilize a single fuse.
’13 – ’14 Shelby Vehicles utilize two fuses.
To support BIG HP on the ’11-’12 Shelby: Use the JMS
Shelby Fuel Pump Wiring Upgrade. This upgrade easily supports the amperage
requirements required.
STEP 5
Mount the Unit
Utilize the self-taping screws to mount the unit. 
Make sure that the mounting location leaves you with enough excess wire so
none of the connections are under strain.
Pay attention to where you are mounting the unit (avoid drilling into the
factory fuel lines, brake lines or wire harness).
Be sure to mount the unit away from extreme heat and direct contact with
water. Typically the unit is mounted inside the vehicle cabin or trunk.
STEP 6
Verify the Unit Powers On
Green LED will illuminate ON (solid), when the ignition key is set in the “ON”
position.
FuelMAX EZ monitors the FPDM
Duty Cycle – it will automatically boost voltage to 22v anytime the Fuel Pump
demand is greater than 60% (heavy load and wide open throttle).
The green LED will slowly blink ONLY when the vehicle is at heavy load and
wide open throttle.
TROUBLESHOOTING
Power Issue - > LED is OFF and the unit does not Output Voltage
- Is the Key turned ON? Check the fuse(s) for the fuel pump
- Blown Fuse (check the 40amp Heavy Gauge Red Wire Input Fuse)
- The Black Ground wire is not connected to Chassis Ground.
- Verify that the two-pin connector is plugged into the FuelMAX EZ.
Power Issue - >
- Verify that the two-pin Red/White connector is connected and the FPDM plug-and-play connectors are connected to FuelMAX EZ.
Warranty & Contact Information
JMS warrants to the original purchaser the following:
Your JMS Product will be free from defects in materials and workmanship for a
period of twelve months from the original purchase date. The warranty only
covers the product itself and not the cost of removal and re-installation of
the product. JMS may extend the limited warranty on a case-by-case basis,
based on the circumstances of the warranty claim. Our products are designed
exclusively for use in racing applications. JMS products that are not
installed according to the supplied instructions, may not be covered by
warranty.
Specific conditions that will VOID the product warranty:
- If the product case has been opened or the product has been modified or repaired.
- If the product was not installed or used correctly.
- If the product has been tampered with by negligence, misuse, or accident.
- If the product is returned without an explanation of the problem or Return Authorization.
Contact us at601-766-9424 for a
Return Authorization Number:
All warranty returns should be returned freight pre-paid and should include
inside of the box: Proof of Purchase and a Letter that contains both the
Return Authorization Number and a Clear Explanation of the EXACT problem. The
Return Authorization Number should also be clearly written on the outside of
the box.
Send all returns to:
JMS Returns
240 Springview Commerce Drive, Bld 1, Ste J
DeBary, FL 32713
JMS Chip & Performance LLC is not liable for any and all consequential damages
arising from the breach of any implied or written warranty in regards to the
sale of this product, in excess of the purchase price.
Technical Support & Contact Information:
240 Springview Commerce Drive, Bld 1, Ste J
DeBary, FL 32713
601-766-9424
Technical Support Hours:
Monday – Friday 9:00am – 5:00pm (Central Standard Time)
Installation videos are available
online:www.youtube.com/jmsc
If you have any questions, please contact JMS technical support email:
jms@jmschip.com
Follow Us on Social Media
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| YouTube: www.youtube.com/jmschip
Documents / Resources
| JMS
Fuel MAX EZ Street Legal
Performance
[pdf] Installation Guide
Fuel MAX EZ Street Legal Performance, Fuel MAX EZ, Fuel Street Legal
Performance, MAX EZ Street Legal Performance, Street Legal Performance, Street
Performance, Legal Performance
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References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>