Holley EFI GPS Speedometer 553-121

4-1/2" GPS Speedometer (w/ Odometer), 0-160 MPH, Black Face
Holley is pleased to announce the continuing evolution of its very successful analog-style gauges with the release of new 3-3/8" and 4-1/2" speedometers and tachometers to complement our 2-1/16" gauge line. These are designed specifically for use with Holley EFI systems or as a standalone unit and available in both black and white face versions. These gauges are compatible with all Terminator, HP, Dominator, and Sniper ECU's, allowing them to be installed in a variety of Holley EFI equipped vehicles.FeaturesFor GM LS Engines with 24x crank reluctor and Multec 2 InjectorsReal-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. Injector support chart provided in the instructions (Will not control Low Impedance Injectors)All of the new Terminator X systems utilize the Bosch LSU 4.9 wideband to relay AFR information to the ECU for accurate reading and precise tuning control.MAP Sensor vacuum hose adapters (1/8th – ¼ and 3/16ths)4 Outputs – Ground, PWM - , for accessories such as; fans, boost control, nitrous control, IAC Kit, and More4 Inputs – 12v, Ground, 5v, and Frequency, for things such as additional pressure sensors, or activation triggers for nitrous activation, or a trans brakeBoost Control – Boost vs Time, Boost vs Gear, Boost vs RPM, Boost vs Speed, Boost SafetiesNitrous Control – Single Channel of Wet or Dry, Progressive or Non-Progressive, Rich/Lean Safeties, and target Closed Loop AFROn-Board Diagnostic LEDS for: ECU Power – Engine Run – Wideband Status – TPS Calibration – Crank Signal –Cam Signal. Allow you to identify any Critical engine issues at a glanceAdvanced Tables – 4x 1D Tables, 1x 1D per Gear Table, 4x 2D Tables, 1x 2D per Gear Table, can be used for any custom tables you can dream up, such as Flex Fuel Sensor Offset Table, or a custom fuel or oil pressure safety!Includes CAN/USB tuning cable allowing you to configure your ECU and Tuning the engine in real time.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 such as; analog style gauges, shift lights, various modules, and coming soon, 12.3" digital dash support!Free EFI Tuning Software for complete control of your Terminator X power plantIncludes: 24x LS Engine Main Harness - Multec 2 Injector Harness - Terminator X ECU - ECU Main Power Harness - Bosch LSU 4.9 Wideband Oxygen Sensor - Input/Output Harness - and assorted vacuum adapters.