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I'm trying to figure out what some of the live engine data values mean on my vcds scanner, in particular, i want to find the long term fuel trim.
I can find the short term trim easily, but there appears to be several other lambda correction values i can see, but can't work out what they all mean.
I created a vacuum leak to try and work it out, the short term trim pegs to 25% straight away, i am looking to see one of the other values slowing increasing to compensate (the long term trim), but can't see any other activity in any of the 'other' lambda correction values.
anyone know which data group i should look in?
I can find the short term trim easily, but there appears to be several other lambda correction values i can see, but can't work out what they all mean.
I created a vacuum leak to try and work it out, the short term trim pegs to 25% straight away, i am looking to see one of the other values slowing increasing to compensate (the long term trim), but can't see any other activity in any of the 'other' lambda correction values.
anyone know which data group i should look in?
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