FiTech Ultimate LS Engine Management Systems Take the Pain Out of EFI Tuning

GM LS engine swaps are all the rage these days because the engines are plentiful, cheap, and can be retrofitted into darned near anything. The engines’ factory power ratings are stout enough for some folks, while others want to stab in a hotter cam, upgrade the heads, or bolt on a blower or turbo. 

The FiTech Ultimate LS Engine Management System from FiTech ditches the stock gear for a standalone, self-learning ECU that tunes itself as you drive and allows you to fine-tune fuel and ignition curves for more performance. Features include:

• Self-learns to work with most cam swaps
• Compatible with 24X and 58X cranks and cams
• Custom plug-and-play wiring harness for an easy installation (reuses factory coil pack sub harness)
• Sequential fuel and spark control with individual cylinder trims
• 3-BAR MAP sensor automatically detects up to 30 psi of boost
• Stainless steel O2 sensor bung with clamp-on or weld-on installation
• Two programmable fan control outputs
• Output drivers that work with most speedometers and tachometers
• On-the-fly programmable for air/fuel ratio and timing
• Fuel pump relay output
• Knock sensor control
• Windshield mount for touch-screen controller

FiTech also offers the Ultimate LS system with a transmission controller for GM 4L60, 4L65, 4L80, and 4L85 automatic transmissions. You’re not only assured the transmission will operate properly, but you’ll be able to regulate other parameters like shift points, shift firmness, when to downshift, and more. 

FiTech Ultimate LS Engine Management Systems work with Gen III/IV LS street and performance engines using a factory intake manifold, injectors, and cable-operated throttle body. 

SEE FITECH ULTIMATE LS ENGINE MANAGEMENT SYSTEMS AT SUMMIT RACING