FAST Kit LS Transplant EZ-EFI & LSX

Bolt FAST EZ-EFI technology onto your LS engine with a FAST EZ-EFI Engine + Manifold Kit. Including our FAST EZ-EFI Fuel ECU and Multiport Harness, an LSXRT manifold, Big Mouth Throttle Body, billet fuel rails, Precision Flow fuel injectors, inline fuel pump and an XIM ignition control system, this is the most complete EFI induction solution for your LS project.

Additional Information

Including our EZ-EFI, XIM Ignition Control, LSXRT Manifold, Big Mouth Throttle Body and inline fuel pump, this kit includes everything needed to bolt modern FAST EFI technology onto your LS engine and also control the ignition system.

Part Type

Fuel Injection System

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.

Product Downloads

#	Document Type	Download
1.	Catalog

Installation guides, warranty details, and other supporting documents are provided by the supplier. In some cases, these files may originate from regions outside your locale, meaning instructions, warranty procedures, and images may not fully align with your specific vehicle or region (e.g., LHD vs. RHD differences, return policies, etc.). If you need clarification, please contact a StreetFX support agent.

Reference Information

Fuel Injection System, w/Inline Fuel Pump, Self-Tuning, FAST EZ-EFI GM LS, III/IV, Multi-Port, LSXRT Intake Manifold, XIM Ignition, Kit

FAST EZ-EFI III/IV fuel injection systems with FAST LSXRT intake manifold for GM LS combine the bolt-on XIM coil-on plug ignition system with the revolutionary self-tuning FAST EZ-EFI to give LS applications the easiest, most advanced self-tuning electronic fuel injection system available.

Systems include:
• FAST LSXRT intake manifold
• Big mouth 102MM throttle body
• Billet aluminum fuel rails
• Fuel injectors
• Wide band oxygen sensor
• TPS
• IAC
• Coolant and air temperature sensors