AFR readings

[oblark]

I`ve been playing around with the fueling part of the map and have found out that it is possible to convert the fueling map to a AFR map.

With the conversion I have AFR readings ranging from 10.7 rigth up to 20.5

The lowest reading is at 6600 rpm with max load and the highest reading is also at 6600 rpm but with min load.

The average reading is 15.5 :)

But is 20.5 lean or rich ?

[Jamest5r]

20.5 is very lean mate, ideally around 14-15 on general cruising on the motorway and on idle then around 11-12 on wot, part throttle mapping is the hardest bit to do and the gauge will jump around quite a bit depending on the tiniest movement of the accelerator

[AndysR]

What James said :)

[p fandango]

I'm assuming it's taking it's reading from a seperate sensor & not the factory narrowband

[oblark]

Its not a actual reading but a guide.

[oblark]

Here is a screen dump of the VE map set points (fueling map NOT @ WOT)

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And here is a screen dump of the VE map converted to give a "guide" to what the AFR`s will be.

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As you see the highest (and leanest) readings are at max revs and at max load.

When at WOT more fuel is added to the map so the lean running at high revs & load will go, the only way to find this out is to fit a AFR and log the readings :)

[Jamest5r]

Excuse my.ignorance as never really looked at these pro tuner tables but is there any way of getting the left axis to read the load of the engine ie 0%-100% much easier to match to the revs then?

[oblark]

Excuse my.ignorance as never really looked at these pro tuner tables but is there any way of getting the left axis to read the load of the engine ie 0%-100% much easier to match to the revs then?

The engine load is unfortunatly only measured in Milliseconds form 0 to 8.02 :(

[MoleT-5R]

Excuse my.ignorance as never really looked at these pro tuner tables but is there any way of getting the left axis to read the load of the engine ie 0%-100% much easier to match to the revs then?

is that not what is over the top of the graph ???

[oblark]

The top line on the table is engine speed and the left hand column is engine load measured in milliseconds.

Just because the last number on the load is 8.02m/s the engine can go above that number so to have a formula that could convert m/s to % would be difficult as what m/s reading would you take as 100% ? :)

Heres a data log of a run I did, as you see the load is 10.51 m/s

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