Those who run LPG converted 2.2's

[diesel des]

Results?

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[hunker7]

Just about to go for a drive to collect the map points. Increased switchover time and transition is much better, ms on petrol still jumps around slightly, but even when it's running on petrol it's jumping around.

[diesel des]

Sure it moves slightly just say it up so on gas it moves in the same band approx

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[hunker7]

Idle is good now, so is switch over though sometimes a bit shaky. Still shakes as soon as boost is 0.4bar ish and when driving on LPG check engine light comes on every now and then.

It looks like this after autocal and drive. Multi is at 8 now and offset is 0.8ms, says nozzles are in range(didn't put restrictions back in) and adjusted pressure to ~1bar

[hunker7]

Just checked, error code I'm getting is 2413 blink code which is mixture adaptation

[diesel des]

Mixture adaption error in motronic is because the gas map is wrong. It does look more like what it should now so save that map so you can call it back if required.

Try clicking the use model for idle box. My ecu doesn't have that.

To try and sort the issue on boost we need to know if it's way to rich or lean. In guessing rich. So the top 2 points on your model graph should be pulled down some to lean it off at high loads. That's the one that says 14.9 and then one above it. Pull them down 1 full line lower on the screen and try boost again. If better pull down some more. I find my graph needs to be quite low up top.

Also mixture adaption limit in Motronic means the mixture is wrong while engine is in closed loop lambda. Again I find my graph needs to be more rich at the lower part. So try increasing some of the lower values up the screen maybe just under 1 line. Start with the second and third valve on the graph. Do one at a time.

You will get there it just takes time and experience. Ideally get someone to look at laptop while driving on flat road and note motronic Times at 40 mph 60 mph 80 mph. Then do the same on gas. Drive at a steady speed on same roads. If gas times are off compared to petrol adjust map at that point to get them closer.



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[diesel des]

Also small adjustments at the bottom of your graph make a big difference. Small adjustments at the top of the graph make little difference.

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[diesel des]

When the car drives bad look were the line is on the model graph and then you know which point of the graph needs adjusted. This sounds complicated and hard to explain but I could do it in person in 20 minutes.

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[hunker7]

So something like this? The green points?



I live up north, so it's hard to find a flat road anywhere near

If I click "Use this model for idle" I can adjust the position of P1 (no load) and P2 (with load).

[diesel des]

Can't you pull down the red points to the position of the green points? Havnt seen the green point before. Not sure what that idle model is. Was intersted to see.

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[hunker7]

Can't you pull down the red points to the position of the green points? Havnt seen the green point before. Not sure what that idle model is. Was intersted to see.

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I put the green points in on Paint to see if I get the right idea.

This is what happens when I click idle model

[diesel des]

Ok forget idle model for now. Try moving the upper points to where the green paint dots are. Not be scared to pull them down 2 or 3 times. At the top end it takes big changes.

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[diesel des]

At which point inn the graph does the car to lumpy on boost?

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[hunker7]

Boosts well all the way to 2.4 Idle is rough but when switching between petrol and gas it doesn't really change much, but I'm still getting mixture adaptation error every now and then?

Do I still need to collect map points even if I used modelling tab?

[diesel des]

Collecting map points help find were the map needs changes. You need to find tune the lower points now.

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