Description
Engine Control Module - XFI Street - Internal Data Logging - Universal - Kit
XFI Strt Upgrade
The engineers at FAST® designed this all-new, laptop-tunable ECU to appeal to customers and dealers with simple EFI needs, but who prefer the greater flexibility afforded by laptop tuning. The XFI Street Engine Management System provides a cost-effective option for those customers who don't need the most high-end system, but also want complete control. Since XFI Streetâ„¢ uses the same wiring as the EZ-EFI, it could easily be installed in place of an existing EZ-EFI ECU. Utilizing included C-Com® software, XFI Street can be used to tune an engine whose characteristics are not ideal for the self-tuning features EZ-EFI provides. The XFI Street Engine Management System has data logging capability when connected to a laptop. The unit is offered in kits with an EZ four-injector throttle body and with or without a multi-port harness. It is intended only for naturally aspirated engines.
Additional Information
The XFI Street Upgrade Kit contains everything needed to take your EZ-EFI Fuel to the next level. Including a new ECU, C-Com software and a communication cable, this kit is the most cost-effective way to make your EZ-EFI laptop tunable.
Application Summary
Applications with existing EZ-EFI Fuel Throttle Body EFI System or EZ-EFI Fuel Multi-Port Fuel Injection System.
Part Type
Fuel Injection System
Data: v2 - Desc: v4.2 - Upd: 2026-11-08 01:01:22
Features
Vehicle Compatibility and Return Conditions.
This item was designed and engineered in the USA for US domestic vehicles. OBD tools, ECUs, dongles, programmers, and tuners may have limited compatibility with vehicles outside the USA due to regional differences in emission standards and system configurations. Some features and functionality may vary depending on the vehicle and location.
Some electronic tuning devices and programmers require activation, registration, or pairing with a specific vehicle’s VIN (Vehicle Identification Number). Once activated or paired, these devices may become permanently associated with that vehicle, restricting or preventing their use on another vehicle, resticting our ability to offer returns or exchanges.
Please review the product details and images to ensure it meets your needs. For clarification or assistance, feel free to contact a StreetFX agent. Note: Returns are not accepted for special order or tuning products unless the unit is deemed faulty.
Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.
Specifications
Reference Information
| Reference Data (Provide these details to our support team) | |
|---|---|
| Brand Name/s | Fast, FAST ELECTRONICS |
| StreetFX SKU | fst304003 |
| SFX Item ID | 4085017 |
| Accounting SKU | fst-304003 |
| Manufacturer SKU | 304003 |
| Manufacturer UPC | 036584184294 |
| Alternative References | 304003, FST-304003 |
ECU
All new from FAST, the XFI Street engine control units give you a more cost-effective system with the flexibility of laptop tuning. This system uses the same wiring as the FAST EZ-EFI and can be installed in place of an EZ-EFI ECU. The XFI Street unit offers data logging when connected to a laptop and is designed for only naturally aspirated engines. This system is offered with a multi-port harness (also available with an EZ-EFI 4-injector throttle body and harness, or in a retrofit kit for adding an XFI Street ECU to an existing EZ-EFI installation).
Some of the FAST XFI Street engine control units' standard features include:
• Perfect for custom individual runner induction systems
• Easy-to-use software for novice and experienced tuners
• Data logging makes tuning and troubleshooting easier
• Advanced diagnostics help maintain peak performance
• Direct plug-in capability with EZ-EFI fuel wiring harness and throttle bodies; only need to replace ECU to upgrade system
| Product Attributes | |
|---|---|
| Brand | FAST |
| Manufacturer's Part Number | 304003 |
| Part Type | Computers |
| Product Line | FAST XFI Street Engine Control Units |
| UPC | 00036584323815 |
| PROM Installation or Computer Flash Required | No |
| Remanufactured | No |
| Quantity | Sold individually. |
| Notes | This is the replacement ECU for the FAST XFI Street engine management system. |
Brochures
Compatibility
Loading compatibility information...
Keep shopping
More from Fast
Fast
FAST Replacement Optical Triggers 700-0020 Trigger, Replacement, XR700, XR3000, Each
fst700-0020
