The units are pound mass of fuel per injection.
To get my breakpoint set to 2.5ms I had to work out how much fuel (lb mass) is delivered in 2.5ms
First I worked out how much fuel is delivered in 1ms:
1000ms in a second
60 seconds in a minute..
60 minutes in a hour
42.29lb/hr injectors
lb mass per ms=42.29/(1000*60*60)
which works out to be 1.174722222e-5 AKA 0.0000117472 lbs of fuel per ms.
so to set it to 2.5ms I multiplied 0.0000117472 by 2.5 which gave me 0.000029368
Set the breakpoint to that and tada! A useful injector low slope!
The EEC uses Injector Offset Vs Battery Voltage function to compensate for the injector open and close time. The amount of time it takes the injector to open and close varies by the amount of voltage available to drive the injector.
Injectors offset examplesKAMRF is the long term fuel trim. KAMRF is a multiplier that is applied to the final PW the eec calculates.
Lambse is the A/F ratio that the EEC is commanding. In a perfect world the Lambse is the A/F ratio that you should see on a wideband.
The value of lambse is calculated from the various fuel tables.
The MAF is a Mass AirFlow meter. Meaning that it measures the volume of air passing through it by weight. The MAF outputs a voltage signal to the EEC according to how much air is flowing by it. The Maf Transfer Function is a function the eec uses to calculate the amount of air entering the engine.