Commonly Used Abbreviations Reference

This page lists and describes many of the acronyms that are frequently used on this site as well as the Shelby-Dodge Mailing List.  If you have an acronym that you can't find here, please e-mail me.

Abbreviations List

A/C - Air Conditioning
AIS - Automatic Idle Speed: Motor to control idle speed.
ASD - Automatic Shutdown: Relay to shutdown fuel injectors, pump and ignition.
ECU - Engine Control Unit: The logic and power modules, SMEC, or SBEC.
EGR - Exhaust Gas Return valve: used for emissions and spark knock control.
FPG - Fuel Pressure Gauge
FPR - Fuel Pressure Regulator: Device mounted to the fuel rail to maintain a constant pressure, relative to the manifold pressure.
MAP - Manifold Absolute Pressure: Sensor to read the absolute pressure (relative to a total vacuum) of the manifold or atmosphere.
MPI - Multi-Port Injection: All turbocharged engines and some later non-turbo engines.
N/A - Naturally Aspirated: Non-turbo engine of any kind.
SBEC - Single Board Engine Controller: The ECU when the SMEC circuits boards were redesigned onto a single board.
SMEC - Single Module Engine Controller: The ECU when the logic and power module circuit boards were combined into one unit.
TBI - Throttle Body Injection: Many non-turbo 2.2L and 2.5L engines.  Often called "single point injection" or "pseudo-carb".
TPS - Throttle Position Sensor
WOT - Wide Open Throttle

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Updated 10/21/2003.

Copyright © 1996-2003 Russ W. Knize.