Next is tuning terms:

AE. (Acceleration Enrichment) This is basicly like a accelerator pump in a carb. It gives a extra shot of fuel when you hit the gas.

AFR. (Air Fuel Ratio) The ratio of how much air and how much fuel are mixed together. The most common you will see is 14.7, this is whats usally reguared as the desired ratio. The larger the number, the leaner (less fuel) the mixture is, and the smaller the number, the richer (more fuel) the mixture is.

BIN. (Binary) Binary is a form of computer code formed of zeros and ones. Its is how the info is stored on the EPROM. Most commonly seen as a bin file. This is what you use your tuning software to view. It displays the bin file in a format you can understand.

BARO. (Barometric Pressure)

BLM. (Block Learn Multiplier) This is the ecm/pcm auto correcting the air fuel ratio. The computers are allowed to self adjust to a specific ammount. That way they can keep the correct air fuel ratio as things such as weather, altitude, and the fuel itself change.

*INT. (Integrator) (need a good defination)

BPW. (Base Pulse Width) This is basicly how quickly the the injectors are opening and closing. A small (or short) BPW, the injectors are opening and then closing really quickly, letting less fuel through. A larger (or longer) BPW holds the injectors open longer to allow more fuel through.

Closed Loop. This is when the computer is activly taking readings from all the sensors and uses the data to make constant adjustments and changes to keep the air fuel ratio correct. It adjusts fuel to keep the desired ratio and adjust for things such as changes in elevation and weather.

Open Loop. This is when the computer is running the engine based off preset programming. The computer is not actively making fuel adjustments. Open loop is usally when the engine is cold. The engine (and 02 sensor) must get to a specific temp before closed loop is allowed. Things such as failed sensors or trouble codes can force open loop.

DE. (Deceleration Enleanment) When you let off the gas pedal the ecm/pcm will reduce the ammount of fuel going into the engine, as you dont need as much fuel as you do during normal driving. Keeps you from running rich during deceleration.

DFCO. (Deceleration Fuel Cut Off) Reduces the injector BPW to zero, basicly shutting off all fuel to the engine during hard decel. Makes compression braking (using the enging to slow you down instead of the brakes) stronger. Fuel it turned back on if you hit the gas again, or the engine speed drops to a pre programed rpm.

*DRP. (Distributor Reference Pulse)
　
KPa. (KiloPascals) a unit of measurement. This is how vaccume is displayed in most all fuel injection tuning. 100 KPa would equil to wide open throttle, no vaccume, 20KPa would equil high vaccume during deceleration.

PE. (Power Enrichment) richens the air fuel ratio during times of hard acceleration for more power. Simmilar in function to a power valve in a carb.

*VE. (Volumetric Efficiency)