Glossary

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2byte/1byte load/rpm

Refers to real time load or RPM from ECU Official 2byte Thread

A/C - Air Con

Air Conditioning is use to lower air temperature inside the car

AIT - Air Intake Temperature

Temperature of air after intercooler is measured before going into intake manifold.

AFR - Air/Fuel Ratio

The ratio of air to fuel present during combustion. For example an AFR of 14.7 actually means 14.7 parts air to 1 part fuel.

Baro - Barometer/Barometric

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BCS - Boost Control System

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BDEL - Boost Desired Engine Load

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BTDC - Before Top Dead Center

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BWGD - Base Wastegate Duty

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CEL/SES - Check Engine Light/Service Engine Soon

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DLL - Data Log Lab

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DSM - Diamond Star Motors

Refers to generation of DSM from 1990-1999 such as Mitsubishi Eclipses, Eagle Talons and Plymouth Lasers.

ECU - Engine Control unit

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EDM - European Domestic Market

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EGR - Exhaust Gas Recirculation

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IAT - Intake Air Temperature

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Internal ID - ECU Internal Idendity

Internal ID (from ECUFlash) is identification of ECU ID. The ID can derived the Evo model such as 88590015 Patched Mods

ICS - Inter Cooler Spray

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IDC - Injector Duty Cycle

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IGN - Ignintion

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IPW - Injector Pulse Width

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JDM - Japanese Domestic Market

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LTFT - Long Term Fuel Trim

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MAF - Mass Air Flow

Measurement of air volume (in Hz) from air intake

MAP - Manifold Absolute Pressure

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MUT - Multi Use Tester

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NLTS - No Lift To Shift

No Lift To Shift is a feature patched by TephraMod which allow the driver to keep the car at WOT whilst shifting base on present conditions (Load/TPS/Speed/Clutch Down).

02/NB0 - Oxygen Sensor (Narrow Band)

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RPM - Rev Per Minute

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SAS - Speed Adjusting Screw

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STFT - Short Term Fuel Trim

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TBEC - Turbo Boost Error Correction

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TPS - Throttle Position Sensor

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USDM - United States Domestic Market

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VE - Volumetric Efficiency

Refers to efficiency of the engine moving the charge in and out of the cylinders. More info from Wikipedia

WB02 - Wideband Oxygen Sensor

Wideband sensor produced 0-5v feedback to ECU or meter. The a/f signal is accurately measure as oppose to narrowband sensor. Please see Wide Band Air Fuel Meter for variety of widebands.

WGDC - Wastegate Duty Cycle

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WGDCCorr - Wastegate Duty Cycle Correction

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WOT - Wide Open Throttle

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