EMS Port Injection Kit | Ultimate Aux Fuel Solution (Upgrade)
If you’re stepping into the world of port injection, the EMS Port Injection Kit is one of the best ways to do it right the first time. This isn’t just a hardware upgrade — it’s a full system built to give your Mustang EcoBoost the extra fueling it needs when you start pushing power, running ethanol, or preparing for big boost.

Choose Your Solution
Option 1 — EMS Port Injection Kit Only
Choose this if you want just the port fueling hardware with your choice of injector size.
Includes:
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EMS Port Injection Plate
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Fuel Rail & Fittings
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EMS Mounting Bracket
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Injector Spacer
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MaxxECU MINI Controller (port kit version)
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2-Pin DTM Connector
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Your choice of injector size:
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1300cc Injectors
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2200cc Injectors
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Price When Selected in Builder:
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EMS 1300cc Port Kit Only: (shown when “I just need the EMS Port Kit” + 1300cc selected)
$2,025.00 -
EMS 2200cc Port Kit Only: (shown when “I just need the EMS Port Kit” + 2200cc selected)
$2,025.00
This is ideal for builds that need port hardware but do not yet need advanced auxiliary fuel upgrades.
Option 2 — Port Injection Kit + EMS Ultimate Aux Fuel Solution (Full UAFS)
Choose this if you want both port fueling hardware and advanced auxiliary fueling support — recommended for high boost, E30/E85, and heavy ethanol use.
Includes Everything from Option 1, Plus:
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MaxxECU MINI Controller (UAFS Version)
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EMS Mounting Bracket optimized for UAFS
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2-Pin DTM Connectors (UAFS)
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Kaizen Power Relay (UAFS)
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Flex Fuel Sensor Kit (UAFS)
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Optional but Recommended: DW400 Low-Side Fuel Pump upgrade
Builder Prices You See:
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1300cc Port Kit + Ultimate Aux Fuel Solution:
$2,399.00 -
2200cc Port Kit + Ultimate Aux Fuel Solution:
$2,574.00
These are the maxed-out fueling options you’re showing in your screenshots.
Option 3 — Ultimate Aux Fuel Solution Only (UAFS-Only Option)
For customers who already own a working port kit (hardware + injectors) and only want the advanced auxiliary fuel system upgrades.
Included:
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MaxxECU MINI Controller (UAFS Version)
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EMS Mounting Bracket (UAFS)
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2-Pin DTM Connectors (UAFS)
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Kaizen Power Relay (UAFS)
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Flex Fuel Sensor Kit (UAFS)
Optional Recommendation:
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DeatschWerks DW400 Low-Side Fuel Pump (optional but strongly recommended for ethanol & high boost)
Not Included (Assumes You Already Have):
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Port Injection Plate
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Fuel Rails & Fittings
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Injector Spacer
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Injectors (1300cc / 2200cc)
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Any port kit controller hardware (UAFS replaces the controller portion)
UAFS-Only Price:
$1,288.79
This is perfect for anyone who already has a functioning port kit and wants to add safe, reliable auxiliary fuel support without buying redundant hardware.
Why These Options Matter
Port Kit Only:
A complete set of port fueling hardware if you are building from stock.
Full Ultimate Aux Fuel Solution:
Adds real-time ethanol monitoring and a dedicated auxiliary fuel controller for high boost/ethanol use. Best choice for builds exceeding 30+ psi or heavy ethanol blends.
UAFS-Only:
Allows existing port kit owners to add advanced auxiliary support without paying for parts they already own.
Optional Wiring Integration — Available for Any Option
Need wiring harness help? We offer professional wiring integration for:
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EMS Port Injection Kit
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EMS Ultimate Aux Fuel Solution
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UAFS-Only installs
$450 – available by mail-in harness or shop install.
Wiring integration includes:
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OEM-quality routing
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Soldered, heat-shrunk connections
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Labeled and tested terminals
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Plug-and-play installation
Quick Option Pricing Summary
| Option | Price |
|---|---|
| EMS 1300cc Port Kit Only | $2,025.00 |
| EMS 2200cc Port Kit Only | $2,025.00 |
| 1300cc Port Kit + Ultimate Aux Fuel Solution | $2,399.00 |
| 2200cc Port Kit + Ultimate Aux Fuel Solution | $2,574.00 |
| UAFS Only (Aux Fuel Upgrades Only) | $1,288.79 |



















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