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.

The EMS Port Injection Kit: Starting at $2,025 (Inc Maxx Ecu MINI)
The EMS Port Injection Kit It comes with everything you need to get started: our billet port injection plate, fuel rail, injector spacer, FIC 1300cc injectors, and most importantly — the MaxxECU MINI controller that manages the port system independently from your factory ECU. We also include the EMS mounting bracket and wiring connector for a clean install. Plus, if you want it done right the first time, we offer full wiring integration services in-house or by harness send-in.
What’s Included:
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EMS Port Injection Plate
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Fuel Rail & Fittings
- EMS Mounting Bracket
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Injector Spacer
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FIC 1300cc or 2200cc (Recommended)
- MaxxECU MINI Controller
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2-Pin DTM M/F Connector
If you’re pushing 30+ psi of boost and running full E85, upgrading your fuel system isn’t just a performance move — it’s a necessity for safety, reliability, and long-term engine health.
That’s where the EMS Ultimate Aux Fuel Solution (UAFS) comes in. It’s more than just a port injection controller — it’s a complete support system built to handle the real demands of high-powered EcoBoost applications.
The EMS Ultimate Aux Fuel Solution (UAFS) Starting at $2,678.25
One of the most critical upgrades in this kit is the Flex Fuel Sensor. When you’re running ethanol — especially at high concentrations like E85 — knowing your exact ethanol content in real-time is vital. Ethanol content affects how much fuel your engine needs, and when you’re pushing over 30psi on a four-cylinder engine, even small miscalculations in fueling can lead to knock, detonation, or worse. This sensor makes sure your tune and fuel delivery stay in sync automatically — no guessing, no risky “pump E85 guessing games.”
The EMS Ultimate Aux Fuel Solution includes:
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EMS Port Injection Plate
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Fuel Rail & Fittings
- EMS Mounting Bracket (UAFS)
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Injector Spacer
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FIC 1300cc or 2200cc (Recommended)
- MaxxECU MINI Controller (UAFS)
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2-Pin DTM M/F Connector (UAFS)
- Kaizen Relay (UAFS)
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Flex Fuel Sensor Kit (UAFS)
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DW400 Low Side Fuel Pump Upgrade (UAFS)
Also included is the DeatschWerks DW400 Low-Side Fuel Pump, one of the most important yet overlooked upgrades. The OEM pump simply wasn’t built to handle the sustained fuel demand that comes with high ethanol content and elevated boost. If you’ve been running blends like E30 or higher for a while, your stock pump is already working harder than it was ever designed to — and that fatigue catches up. The DW400 gives you the flow capacity and reliability needed to keep up with high-horsepower demands without leaning out under load.
🔌 Need Wiring? We’ve Got You Covered
When it comes to wiring your port injection system, precision and reliability matter. That’s why we offer professional full wiring integration for your EMS Port Injection Kit or UAFS bundle. For $450, we’ll wire the system directly into your harness — either by mail-in or by appointment at our shop.
✅ Why Choose Our Wiring Service Over DIY?
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Done Right the First Time – No second-guessing pinouts, relays, or connections. We’ve wired hundreds of setups and know exactly how to integrate MaxxECU with your EcoBoost platform.
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OEM-Level Quality – We use clean routing, heat-shrink protection, proper connector crimping, and test every connection before it leaves our hands.
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No Guesswork, No Risks – Improper wiring can lead to injector misfires, sensor errors, or even ECU damage. We eliminate that risk.
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Seamless Install – When your harness arrives back, it’s plug-and-play. No splicing, no figuring it out — just bolt in the kit and go.
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Tailored to Your Build – Whether you’re mailing it in or scheduling an install with us, we make sure your wiring is configured specifically for your setup.
📦 Choose from two options:
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Send us your harness – We’ll wire it and ship it back ready to go.
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Schedule an install – Bring your car in and we’ll wire it cleanly on-site.
If you’d like to schedule, please call us or email us at sales@emsinc-tn.com — we’ll get you set up and answer any questions you have. We’d love to service your vehicle while it’s in the shop, so feel free to schedule a full maintenance oil service or any additional work at the same time. And if you already have some of the parts listed in our kits, just reach out — we’ll be happy to give you a custom quote based on what you need. For anything not listed, or to get more details, don’t hesitate to contact us. We’re here to help you get your build done right, the first time.
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