getting things straight: genIV LMG, E38, wideband O2 and the VVE table

[harascho]

Hi Simon,

which of my logs do you mean? The last one with ALL the data from your modified tun file ( VVE table plus the coefficients) or the first log with my coefficients and your VVE table....

Harald

[harascho]

Could it be that I just forgot to generate the coefficients after I pasted your VVE table in my tun file....??

So in the second tun / log I had your coefficients, ok not the normal way by hitting the coeff button in the VVE table but rather by taking them from your tun. The result should be the same I guess.

I ok pls forgive my my silly questions from time to time..... I am on my way..

Harald

[swingtan]

You always need to "generate Coefficients" after modifying the VVE. If you don't the changes don't get written to the file. I was talking about the last log file. It looks pretty good for VVE work.

Simon

[harascho]

Hi Simon,

then I better start over again.

this is what I will do later the day:

I will take my tun file, copy and paste your VVE table into it.
Then after I generate Coefficients the B8001 and B8051 should look like the ones in your file.
This will be my starting point.
Next will be a test drive with data logging. I also will try to get some data at higher rpm ranges by driving in lower gears ( I don't live in an area where high speed runs are possible..).

Then we will see what results this brings.

You think I could try the AutoVE process.. ok will give it a try.

harald

Thanks for your patience with me Simon..... I hope this thread will help other starters..

[swingtan]

No problems. Using lower gears for VVE tuning "may" result in a slightly richer mixture in higher gears. It's not a big problem though if you mainly drive in those gears and are willing to run a tad rich on the odd occasion you may go to a track. It's all tuning for what you expect the car to do.

[harascho]

Hi Simon,

I did a quicker run today.
Ok what is the next step? Should I apply the BEN_LC11_E38 Map to my original VVE map or should I try to modify your VVE table?
Is there a need to apply any filters to the BEN LC11 E38 map first as in the AutoVe tutorial?

Harald

[harascho]

last question:
should I change the rpm boundaries of any of the tun files (like in the prep for the logging tune file..) before I work on a specific VVE table?

Harald

[swingtan]

Apply the BEN data to the tune that was in the car when the data was logged. It's referenced to the tune in the car at the time of logging so there is no use applying it to any other tune.

Don't go changing the RPM boundaries unless you see a need to. As you have seen, altering the boundaries will mess up the shape of the VVE so if you go changing them, you will need to fix the VVE shape again.

[harascho]

Good morning all together

here are some results....
Simon, as the VVE map was a bit rich you can see very clear where I collected data.
Here is a pic of the VVE after I applied the BEN map (the BEN with the average values..) and before I generated the coeffs.

It's quite visible where my data is applied and not. I will work a bit towards the edges and see what I get after generating the coeffs and the VVE.

Harald

[swingtan]

That's looking good. Reduce the cells where you have not applied data to blend them into the area where you have applied the BEN data. The generate the coeffs and the VVE.

Simon