FAST EFI, LSX Intakes and Fuel Injection for LS and V8 Engines

FAST EFI Systems

FAST Fuel Air Spark Technology offers XFI and EZ EFI engine management for builders moving from carburetion to electronic fuel injection or refining an existing EFI setup. A complete conversion requires compatible fuel delivery, wiring, sensors and calibration.

EZ EFI and XFI Selection

EZ EFI systems suit many street focused conversions, while XFI systems provide expanded tuning capability for advanced engine combinations. Choose by engine family, injector arrangement and intended use.

LSX and LSXR Intake Manifolds

FAST LSX, LSXR and LSXRt intake manifolds are designed for LS engine combinations with application specific runner and port layouts. Confirm cylinder head port style, throttle body diameter and engine generation.

Throttle Body Fitment

FAST offers selected LS and Hemi throttle bodies in several diameters. Match the throttle body to the intake inlet, electronic control strategy and cable or drive by wire arrangement.

Sensors, Harnesses and Fuel Hardware

EFI reliability depends on accurate sensor inputs and compatible wiring. FAST map sensors, air temperature sensors, injector harnesses, fuel rails and related components support complete system planning.

Fuel System Planning

EFI conversions need suitable fuel pressure, pump capacity, filters, injectors and return routing where required. Plan the fuel system as a matched group before installation.

Top FAST EFI Brands and Platforms

• FAST. Fuel Air Spark Technology EFI systems, intakes and throttle bodies.
• Edelbrock. Performance intake, fuel and engine components for V8 builds.
• Holley. Fuel injection, fuel system and engine management components.
• COMP Cams. Valve train and engine components for performance builds.
• TCI Automotive. Transmission controls and drivetrain solutions.
• Chevrolet LS. A major engine family supported by FAST intake and EFI parts.

How to Choose the Correct FAST EFI Part

• Identify the engine family, including LS, Hemi, SBC or BBC.
• Confirm whether the build uses carburetion, throttle body injection or multiport EFI.
• Match the intake manifold to the cylinder head port style and engine generation.
• Verify throttle body diameter and cable or drive by wire operation.
• Select injectors and fuel rails that support the engine power target.
• Plan fuel pump capacity, pressure regulation, filters and return routing.
• Check wiring harness and sensor compatibility with the ECU.
• Choose an ECU system that fits the desired tuning and data needs.
• Confirm clearance for intake height, throttle body and accessory drives.
• Use product fitment details and vehicle filters before ordering.

Common Questions

What does FAST stand for?

FAST stands for Fuel Air Spark Technology, a performance EFI and induction brand.

What is FAST EZ EFI?

EZ EFI is a FAST fuel injection option intended for compatible conversion and street performance applications.

What is FAST XFI?

XFI is a FAST engine management platform for builders who need expanded EFI control and tuning capability.

Does FAST make LS intake manifolds?

Yes. FAST offers LSX, LSXR and LSXRt intake manifolds for selected LS engine applications.

Can I use any FAST intake on my LS engine?

No. Confirm the LS generation, cylinder head port style, inlet size and hood clearance first.

Do I need a fuel system for an EFI conversion?

Yes. Fuel pump, pressure regulation, filters, lines and injectors must support the EFI system and engine.

Are FAST throttle bodies vehicle specific?

Throttle bodies must match the intake inlet and the engine cable or electronic throttle arrangement.

Do FAST systems support Hemi engines?

The verified collection includes selected FAST Hemi throttle body and wiring products. Check each listing for application details.

What sensors are needed for EFI?

Requirements vary by system, but compatible pressure and temperature inputs are important for a complete installation.

Where can I shop related EFI components?

Use the links below for fuel delivery, injectors, intake manifolds, tuners, sensors and Edelbrock parts.

Why Buy FAST EFI from Black Ops Auto Works

Black Ops Auto Works stocks 37 FAST EFI SKUs with real fitment data, competitive pricing and support from staff who build these vehicles themselves. Products are filterable by year, make, model, trim, engine and drivetrain to help confirm the correct application before ordering.

For focused shopping, browse our Fuel Delivery, Fuel Injectors, Fuel Injector Sets 8 Cylinder, Intake Manifolds, Programmers and Tuners, Sensors, Edelbrock.