FiTech Fuel Injection 70003 Ultimate LS1/LS2/LS6 750HP Kit

FiTech Fuel Injection 70003 Ultimate LS1/LS2/LS6 750HP Kit

The FiTech Fuel Injection 70003 Ultimate LS1/LS2/LS6 750HP Kit is a complete self-tuning EFI system designed for LS engines with cathedral port LS1/LS2/LS6 heads. Supporting up to 750 horsepower, it offers a reliable upgrade for LS-based Chevrolet engines from 4.8L to 6.0L, delivering precise fuel and spark control for enhanced performance.

Key Features

• Low profile 102mm fabricated aluminum intake manifold with 3mm thick TIG welded construction
• Self-learning ECU with color touch screen controller for easy setup and configuration
• Sequential fuel and spark control with individual cylinder trim and dual Bosch wideband O2 sensors
• 3 BAR MAP sensor supports up to 30 PSI boost for power adder applications
• Billet fuel rails with AN fittings and fuel crossover included
• Compatible with 24X and 58X crank and cam sensors
• Includes 55 lb/hr flow-matched injectors and custom wiring harness using factory coil pack sub harness
• Two programmable fan control outputs and tach/speedometer output drivers

Fitment

• Cathedral Port LS1/LS2/LS6 heads
• Small Block V8 GEN III/IV LS-based Chevrolet engines from 4.8L to 6.0L, supporting up to 750 HP

Kit Contents

• 102mm billet aluminum throttle body
• Hand-held color touch screen controller with cable and windshield mount
• LS ECU and custom plug-and-play wiring harness
• 55 lb/hr injectors and high volume fuel rails with mounting hardware and AN fittings
• 3 BAR MAP sensor, throttle position sensor, idle air control motor, and idle air temperature sensor
• Dual wideband O2 sensors and stainless oxygen sensor bung kit (clamp or weld on)

Important Notes

• Not CARB approved; not legal for use on pollution-controlled vehicles
• Throttle body clearance may require a new water pump bracket depending on truck accessories
• Optional throttle cable mounting bracket available separately (FiTech part number 70063)

Note: Verify fitment compatibility before ordering. Installation requires basic mechanical skills and tuning knowledge.