**We fully support our products. When you purchase our Aux Fuel Kits you will receive $100 tune credit covering the Aux Fuel Tuning Fee**

Your Big Turbo Fueling Solution for the 2.0/2.3 EcoBoost

Why Aux Fuel?

Direct-injected cars offer an increased level of efficiency and capabilities. However, the fuel systems are very expensive and difficult to upgrade when we want to extract more power from the engine. On top of this, they have issues such as intake valves that get dirty. So it was time to innovate and allow you guys to enjoy a more powerful and safe Ecoboost!

• Recommended for up to 450 WHP on the Focus ST. Check out our 4-port kit if you want more power!
• Injectors included are 2 x 65lb/hr (130lb/hr 1365cc/min total) that can be upgraded at any time.
• Protects your engine from fuel starvation on Big Turbo setups
• Provides the extra fuel needed for more boost and power
• Keeps intake valves clean to avoid low-speed pre-ignition (a form of super knock)
• Directional injection that ensures even distribution of  fuel
• Better fuel metering and atomization than a WMI system
• Water-methanol injection (WMI) port included for non-E85 users
• Fully Plug and Play. No cutting, splicing, soldering, or any non-reversible modifications
• No extra tanks or reservoirs or pressure regulators needed
• E85 Safe

STRATIFIED Focus ST Dyno Results

The OEM DI (direct injection) fuel system in the 2.0 EcoBoost can deliver fuel for up to around 375 WHP, but after this point, it starts to run out in two main areas: The HPFP (high-pressure fuel pump), and fuel injectors. The HPFP is the first to lose pressure and this can cause driveability issues such as sputtering or not running smoothly to redline. The DI injectors are soon to follow in terms of flow limitation especially if fuel pressure drops. This can put the motor at risk of running lean and is especially dangerous when running a bigger turbo! Upgrades for these components, however, are both expensive and in the case of the HPFP simply not available.

Auxiliary fuel can provide that extra volume of fuel to relieve some of the load that high horsepower builds demand from the OEM fuel system. It also helps run a richer mixture which keeps detonation and heats down which are the major factors that contribute to piston and engine failure. 

Additionally, aux fuel has much better fuel metering and atomization than a WMI system - it is a proper fuel system that is also more reliable.

Direct-injected cars offer an increased level of efficiency and capabilities. However, the fuel systems are very expensive and difficult to upgrade when you want to extract more power from the engine. Many OEMs opt to run both port and direct injection systems on their high-power vehicles. This way you keep the DI system's efficiency and only use the port aux system at wide open throttle.

Below is an image that is all too common of fuel pressure drops even when the 2.0 EcoBoost is making around 360whp without auxiliary fueling.

The Stratified Xtra Fuel System addresses both the HPFP and injector shortcomings with a single, plug-and-play auxiliary fuel system. Without any other upgrades, there is enough fuel available for 450 WHP even with the OEM in-tank fuel pump. Below you will see how fuel pressure stays up with the aux system above 25psi of boost with a GTX2867 turbo.

Features & Benefits

Once installed, the system should be tuned (tuning is needed!) to work in tandem with the OEM fuel delivery system for seamless and safe power delivery - especially when using ethanol-based fuels that have higher fuel flow requirements. 

The controller is programmed using a serial/DB9 port. If you don't have a USB converter cable already make sure you purchase that option. 

**Installation Instructions** 

**USB-Serial Cable Drivers. This needs to be up to date to connect to the R4 controller**

Turn-around time: Up to 10 business days

Limited Warranty

This Stratified product is warranted against defects in materials and workmanship for ninety (90) days from the date of purchase. During the warranty period, Stratified will repair, or at its option replace at no charge, components that prove to be defective. The product must be returned, shipping prepaid, to a Stratified facility. This limited warranty does not apply if the product is damaged by accident or misuse. The foregoing warranty is in lieu of all other warranties expressed or implied including but not limited to any implied warranty of merchantability, fitness, or adequacy for any particular purpose or use. Stratified Automotive Controls LTD. is not responsible for any fines, injuries, or damages incurred as a result of the installation or use, or misuse of our products. It is the complete responsibility of the purchaser of such products to ensure that they are used in a legal, safe, and appropriate manner.