FiTech Fuel Injection 70051 Ultimate LS Standalone ECU – With Trans Control

The FiTech Fuel Injection 70051 Ultimate LS Standalone ECU – With Trans Control is a self-learning standalone ECU designed for LS Gen III and IV engines with crank and cam sensors. It replaces the OEM computer and harness, supporting factory intake, injectors, and cable-operated throttle bodies, and integrates electronic control for GM 4L60, 4L65, 4L70, or 4L80 transmissions for optimized engine and transmission performance.

Key Features

Self-learning ECU with color touch screen controller for easy setup and configuration
Sequential fuel and spark control with individual cylinder trim
3 BAR MAP sensor supports up to 30 PSI boost for power adder applications
Electronic transmission control compatible with GM 4L60, 4L65, 4L80, and 4L85 transmissions
24X and 58X crank and cam sensor compatibility
Knock sensor control and programmable fan control outputs
Outputs for tachometer and speedometer drivers
Includes stainless steel O2 sensor bung kit (clamp or weld on)

Fitment

Small Block V8 GEN III/IV LS-based Chevrolet street and performance engines
Compatible with GM 4L60, 4L65, 4L80, and 4L85 electronically controlled automatic transmissions

Note: Does not support drive-by-wire throttle bodies or variable valve timing without modification. Not legal for use on emission-controlled vehicles. Verify compatibility before ordering.