Those who run LPG converted 2.2's

[hunker7]

Yep. Then fine tune that graph. It allows many points to be adjusted. In just trying to get you almost these with multi

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There is first time for everything I guess

[hunker7]

Had a play with Modelling tab and at times it got better, but honestly I have no idea what either of those variables mean or do to how car runs.

Gas pressure seems to be low as well, about 0,7bar?

After doing Autocal, what's the best way to collect the map points?

[diesel des]

The modeling tab allows you to adjust points across the operating range of the engine. From memory the x axis is the gas injector duaratuon and the y axis is the petrol duration. So I find at idle the petrol duration is shorter the gas duration. E.g. 3 ms petrol and maybe 4 ms gas. Then at light load the petrol ecu light be at 5 ms and the gas at 6.5 ms. Then at high loads say 18ms petrol I find the gas is less e.g. 15 ms maybe. You can pull up and down the points inn the graph to get it exactly how it needs to be at all points. Without the wideband lambda it will be harder to tell if it's lean on rich but your stock lambda once connected will help.

Basicly what you want when your inn the measure screen is about 1 bar gas pressure. Then when you switch between petrol and gas the motronic Times should stay the same. If the motronic Times get bigger you need to increase the point on the model curve up in the y position to give more gas. Then try switching again between petrol and gas and see if the times on motronic stay the same. Now repeat at a higher load setting.

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[diesel des]

If you find the gas times are all much more than petrol times increase the multi. If they are all much less reduce multi.

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[diesel des]

Then you need to adjust all your model points again. After a multi adjust.

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[hunker7]

Gas pressure is never at 1 bar, it is about 0.7-0.8 range most of the time?

[diesel des]

Adjust the reducer to get 1 bar. There is an Alan key on top. Set 1 bar also in your ecu and try again.

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[diesel des]

Oh I see gas is tg on the y axis and tb is petrol time on x

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[hunker7]

So I start with Autocal WITH and WITHOUT load

Then should I get map point or calibrate it?

When I calibrate it, do I move P1 or P2 around?

So if Motronic ms goes up when switching to gas, I increase Tg (up in y direction), if Motronic ms goes down, I decrease Tb?

[diesel des]

Autocal can go 2 ways. One is a good setup that drives ok and the other is how yours seems to be which is bad. I try auto cal again and if it's crap reload what you have now and start adjusting it yourself as described.

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[diesel des]

I don't think you need to play with p1 or p2

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[diesel des]

Your on stock petrol injectors right? You could try the restrictors back in your gas injectors again then.

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[hunker7]

Stock injectors yes. I will get the pressure up to correct value and try auto calibration again and see where that takes us.

So the red points are the ones I move up and down as required?

[diesel des]

Yes the red dots on the graph on modeling page. It does look like the calibration has leaned off your gas a lot. I think smaller nozzles will help.

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[hunker7]

OK, I will do that tomorrow and see if that makes it better