FiTech 3ft (91cm) LS Coil Extension Harness (70050-26)

The FiTech 3ft (91cm) LS Coil Extension Harness (70050-26) is a comprehensive standalone Engine Control Unit (ECU) and wiring harness kit specifically designed for simplifying the integration of LS or similar engines equipped with crank and cam sensors into vehicles not requiring emissions controls. As part of FiTech’s Ultimate LS series, this system offers advanced engine management capabilities, making it an excellent choice for LS engine swaps and retrofitting projects. The kit provides the essential components needed to control fuel and spark delivery, ensuring optimal engine performance and efficiency.

KEY FEATURES AND BENEFITS:

• The FiTech 70050-26 system is engineered to streamline the complexities of modern engine management in custom applications.
• Its self-learning ECU adapts and optimizes fuel and spark settings based on real-time engine operation, reducing the need for extensive manual tuning.
• Sequential fuel and spark control ensures precise delivery of fuel and ignition timing to each cylinder, contributing to improved power output, fuel economy, and smoother engine operation.
• The inclusion of a 3 BAR MAP sensor expands the system’s capabilities to handle boosted applications, supporting up to 30 PSI of boost, suitable for turbocharged or supercharged setups.
• Compatibility with both 24X and 58X crank and cam sensor signals provides versatility, accommodating a wide range of LS engine variants.
• The user-friendly touch screen controller offers an intuitive interface for adjustments, engine monitoring, and diagnostic information.
• The custom-designed wire harness simplifies installation using factory coil pack sub-harnesses, reducing the need for custom wiring.
• The system includes two programmable fan control outputs for effective management of engine cooling systems.
• Tachometer and speedometer outputs provide signals for interfacing with aftermarket gauges.
• The integrated knock sensor control helps protect the engine from potential damage by detecting engine knock.
• The fuel pump relay output simplifies wiring for the fuel delivery system.

SPECIFICATIONS:

• Part Number: 70050-26
• Brand: FiTech Fuel Injection
• Product Line: Ultimate LS
• Fuel Injection Style: Multi-port
• Metering Style: Speed density
• MAP Sensor: 3 BAR
• Crank/Cam Signal Compatibility: 24X and 58X
• Throttle Body Compatibility: Cable-operated (does not support drive-by-wire without modifications)
• Injector Compatibility: EV1 or EV6 (adapters may be needed for Multec 2 injectors)
• Fan Control Outputs: 2 Programmable
• Tachometer Output: Yes
• Speedometer Output: Yes
• Knock Sensor Control: Yes
• Fuel Pump Relay Output: Yes
• Application: LS or similar engines with crank and cam sensors, Small Block V8 GEN III/IV LS-based Chevrolet engines
• Compatibility: Designed for use with FiTech LS Fuel injection systems

HOW TO USE:

• Installation of Sensors: Begin by installing the included sensors, such as the 3 BAR MAP sensor and O2 sensor, in the designated locations on the engine and exhaust system. Ensure proper wiring connections according to the provided diagrams.
• Harness Connection: Connect the plug-and-play primary wiring harness to the FiTech ECU and the various engine components, including injectors, coils (using factory sub-harnesses or optional extension harnesses if needed), and sensors.
• Touch Screen Controller Setup: Mount the touch screen controller and connect it to the ECU using the provided cable. This controller will be used for initial setup and ongoing adjustments.
• Initial ECU Configuration: Turn on the vehicle’s ignition and use the touch screen controller to input basic engine parameters, such as engine displacement, injector size, and crank/cam sensor type (24X or 58X).
• Self-Learning Process: Start the engine. The ECU will begin its self-learning process, adjusting fuel and spark based on feedback from the O2 sensor and other engine parameters. Allow the engine to run through various operating conditions (idle, part throttle, full throttle) to allow the ECU to learn effectively.
• Fine-Tuning (Optional): While the self-learning feature is effective, you can use the touch screen controller to make further adjustments to fuel and spark tables, idle settings, fan control parameters, and other settings to optimize performance for your specific application.
• Monitoring: Use the touch screen controller to monitor engine parameters such as RPM, coolant temperature, AFR (Air-Fuel Ratio), and sensor readings to ensure the engine is running correctly.

BENEFITS OF USING THE FITECH 3FT (91CM) LS COIL EXTENSION HARNESS (70050-26):

• Self-learning capability significantly simplifies the setup process, reducing the need for extensive dyno tuning.
• Sequential fuel and spark control provides more precise engine management, leading to improved performance and fuel efficiency.
• The inclusion of a 3 BAR MAP sensor supports boosted applications, eliminating the need for separate controllers or complex configurations.
• The plug-and-play harness design minimizes wiring complexity, making the installation process more straightforward.
• User-friendly touch screen interface allows for easy monitoring and adjustment of engine parameters.
• Compatibility with common LS engine configurations makes it a versatile solution for a wide range of projects.

FEATURES:

• Provides precise sequential fuel injection for optimized performance.
• Offers sequential spark control for accurate ignition timing.
• Includes a high-capacity 3 BAR MAP sensor suitable for boosted engines.
• Compatible with both 24X and 58X crankshaft and camshaft sensor signals.
• Features a color touch screen controller for easy setup, monitoring, and adjustments.
• Utilizes a custom wire harness designed for simplified installation with factory coil connections.
• Offers two programmable outputs for controlling electric cooling fans.
• Provides outputs for connecting aftermarket tachometer and speedometer gauges.
• Incorporates knock sensor control to help protect the engine from damage.
• Includes a dedicated output for controlling the fuel pump relay.