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Author Topic: Scaling/Interpolating KFZW?  (Read 15836 times)
Vitruvian Engineering
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« Reply #15 on: July 11, 2012, 04:55:37 PM »

...
« Last Edit: July 11, 2012, 06:00:48 PM by Vitruvian Engineering » Logged
jibberjive
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« Reply #16 on: July 11, 2012, 06:27:14 PM »

Give advice then, to be honest I notice a pattern with your posts... Ever heard of Eric fletcher?
Oh snaapp.
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kenmac
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« Reply #17 on: July 12, 2012, 10:37:04 AM »

I agree, but all of that can be done by re-interpolating intervening points.

The only data that is missing is whatever load columns you add... and those columns generally are only used during WOT, since they are the maximal load cells...

This was pretty much the point of my post.  Can anyone give a working example on how to interpolate this information?  Maybe I'm just not seeing it.
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nyet
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« Reply #18 on: July 12, 2012, 10:40:29 AM »

I haven't had time to do it, but i've been meaning to write a program to do it.

Excel would probably be preferable for most people, but I am not a fan of excel Smiley
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ME7.1 tuning guide
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rnagy86
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« Reply #19 on: November 19, 2017, 08:44:52 AM »

Just to revive this thread a bit, I am about to re-scale both my load and RPM axis
on KFZW/2, due to the fact that my max load is 360 and the RPM resolution is not
optimal either. Currently KFZW/2 axes cap at 6900 rpm and 200 load and I already
see in my logs that this is far from optimal depending on how boost builds in lower
gears, not to mention part throttle conditions where load is >200.

It is clear that changing the axis will need re-interpolating the affected cells, which is
fine and doable, but my main question is, how would you guys go at re-scaling the
load axis because by looking into my logs, all data columns are used depending on
idle, cruise or WOT conditions. Would you ditch low load columns or middle range?

Of course this will require dyno time, I am just curious how would you guys go at this.
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nyet
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« Reply #20 on: November 19, 2017, 11:35:55 AM »

Would you ditch low load columns or middle range?

Neither. I'd just shrink the existing rows to make room for new ones.
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ME7.1 tuning guide
ECUx Plot
ME7Sum checksum
Trim heatmap tool

Please do not ask me for tunes. I'm here to help people make their own.

Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
rnagy86
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« Reply #21 on: November 19, 2017, 12:24:22 PM »

Neither. I'd just shrink the existing rows to make room for new ones.

Yeah that seems like a good start. Something like this:



converted to



Last three columns are the same now, waiting to be filled.
« Last Edit: November 19, 2017, 12:27:47 PM by rnagy86 » Logged
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