Description

The FiTech LS 750HP EFI LS7 Returnless Module Kit w/ TC/Coil/LED (79817) provides a comprehensive solution for upgrading LS engines with electronic fuel injection. Designed for engines using LS7-style intake ports, this kit supports up to 750 horsepower, offering improved performance and drivability. It features a self-tuning ECM, a 102mm throttle body, and multiple fuel delivery options, including in-tank fuel pump modules. The system also includes LS3-style coil packs, a 4.5-inch touchscreen display, and transmission control for compatible GM transmissions.

KEY FEATURES AND BENEFITS:

• Electronic Fuel Injection: Provides precise fuel delivery for enhanced performance, efficiency, and throttle response.
• 750 Horsepower Support: Designed for high-performance LS engines, capable of handling significant power output.
• Self-Tuning ECM: Simplifies installation and setup with automatic adjustments to maintain optimal air/fuel ratios.
• Transmission Control: Allows for adjustments to shift points and firmness on 4L60/65/80/85 GM transmissions.
• Comprehensive Kit: Includes all essential components, such as injectors, fuel rails, sensors, and wiring harness, for a complete EFI conversion.
• Multiple Fuel Delivery Options: Provides flexibility with various in-tank and external fuel pump options to suit different applications.
• User Tunable: Allows for advanced adjustments for those who require more precise control.
• Touch Screen Interface: Easy monitoring and adjustments with the 4.5-inch color touch screen.

SPECIFICATIONS:

• Maximum Horsepower: 750 HP
• Fuel Injection Style: Multi-port
• Throttle Body Size: 102mm
• Injector Size: 55 lbs/hr
• ECU: Included
• Display: 4.5 inch color touchscreen
• Transmission Control: Yes (4L60/65/80/85 GM)
• MAP Sensor: 3-Bar
• Intake Material: Aluminum
• Fuel Delivery: Various in-tank and external options

HOW TO USE:

• Preparation: Disconnect the battery and remove the existing intake manifold and fuel system.
• Install the Intake Manifold: Mount the FiTech intake manifold onto the LS engine, ensuring a proper seal.
• Install the Throttle Body and Injectors: Attach the 102mm throttle body and install the 55 lb/hr injectors onto the fuel rails.
• Install Fuel System: Select and install the chosen fuel delivery system (in-tank or external), ensuring proper connections.
• Connect Sensors: Attach all necessary sensors, including the O2, MAP, IAT, TPS, and IAC sensors.
• Install Coil Packs: Mount the LS3-style coil packs and connect them to the wiring harness.
• Connect Wiring Harness: Connect the FiTech wiring harness to the engine and the ECM.
• Install Touchscreen: Mount the 4.5-inch touchscreen display and connect it to the ECM.
• Initial Setup: Power on the system and follow the on-screen instructions for initial setup and calibration.
• Fine Tuning: Allow the self-tuning to adjust, then make any desired user adjustments.
• Test Drive: After verifying proper operation, perform a test drive to ensure optimal performance.

BENEFITS OF USING THE FITECH LS 750HP EFI LS7 RETURNLESS MODULE KIT W/ TC/COIL/LED (79817):

• Improved engine performance and throttle response.
• Enhanced fuel efficiency and consistent air/fuel ratios.
• Simplified installation and setup with self-tuning capabilities.
• Precise control over fuel and spark timing.
• Ability to fine-tune engine parameters for specific applications.
• Modernizes older engines.

FEATURES:

• Fabricated 3mm thick aluminum sheet metal intake.
• Cast, cable activated billet aluminum 102mm throttle body.
• Sequential fuel and spark control with individual cylinder trim.
• Connects to 24x and 58x cam sensors.
• Knock sensor control connects to factory sensors.
• Two programmable electric fan outputs.
• High volume billet fuel rails.
• LED indicators on select ignition coils.