Holley HO550-903 Chev GM LS Terminator X Engine Management System

Holley Terminator X engine management systems allow you to take control of your LS engine. They give you complete charge of your engine and self-learning fuel strategies, along with the proven, race-winning technology of Holley EFI--all at budget-friendly prices! Every MPFI Terminator X features real-time fuel learn, high impedance injector drivers, an integrated 1 bar MAP sensor, and 4 programmable inputs and outputs. The inputs and outputs are ideal for electric fans, boost control solenoids, progressive nitrous control, and much more. All systems come fully loaded with base maps for common LS engine combinations to get you out of the garage and on to the road or track fast.

Features include:

• 3.5 in. touch screen LCD handheld with easy-to-use calibration wizard allows you to quickly build a base tune for any LS engine, as well as tuning and gauge display functions
• Holley EFI industry-leading, easy-to-use software suite allows full laptop access for advanced users.
• Real time fuel map learn--takes the guess work out of tuning your base fuel table
• High impedance injector drivers will safely power most stock LS injectors, and Holley EFI injectors. (Will not control low-impedance injectors)
• Bosch LSU 4.9 wideband relays AFR information to the ECU for accurate reading and precise tuning control
• On-board 1bar MAP sensor--perfect for N/A or nitrous engine combos
• MAP sensor vacuum hose adapters
• 4 inputs: 12 V, ground, 5 V, and frequency
• 4 outputs: Ground, PWM for accessories
• Boost control--boost vs. time, boost vs. gear, boost vs. rpm, boost vs. speed, and boost safeties
• Nitrous control--single channel of wet or dry, progressive or non-progressive, rich/lean safeties, and target closed loop AFR--adjustable through touch screen
• Advanced tables—4 x 1D tables, 1 x 1D per gear table, 4 x 2D tables, 1 x 2D per gear table
• On-board diagnostic LEDs allow you to identify any critical engine issues at a glance
• The compact ECU size allows you to mount it virtually anywhere. Remember, diagnostic LEDs must face up!
• Plug-and-play compatible with more Holley EFI accessories

• Quantity: Sold individually.
• Notes: Fits LS1 and LS6 engines with 24x crank trigger, 1x cam, and EV1 injector harness.