Audi A4 EDC16U31 Map addresses

Posts related to map selection, map location, correct map treatment.

Re: Audi A4 EDC16U31 Map addresses

Postby taktijs » Tue Aug 28, 2012 10:59 am

Can anyone maybe help me to find the selector map for the duration maps? It should be behind the duration maps itself, but I cann't find them :(

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Re: Audi A4 EDC16U31 Map addresses

Postby RPM freak » Tue Aug 28, 2012 11:55 am

You got mislead at the other forums. Someone that thinks that he knows something told you wrong information.
The selector map for the duration maps its NOT behind the duration maps itself. You are looking at wrong place.

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Re: Audi A4 EDC16U31 Map addresses

Postby taktijs » Tue Aug 28, 2012 2:41 pm

RPM freak wrote:You got mislead at the other forums. Someone that thinks that he knows something told you wrong information.
The selector map for the duration maps its NOT behind the duration maps itself. You are looking at wrong place.


So where should I look then?

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Re: Audi A4 EDC16U31 Map addresses

Postby Relic » Tue Aug 28, 2012 2:59 pm

I normally find it easier in winols now.
1. stay in hexdump.
2. right cick hexdump and select both.
3. select 255 (decimal), 16bit and hilo view.

With both columns active in the right hand side its easy to see patterns.
You can use w/m until those patterns line up.
You can use ctrl & arrow to shift the pattern left/right, so that they are ascending or descending.

Most single tables have the axes right before the table itself.
But there are sometimes pairs and quads.
For these you will have 2 or 4 tables right after each other and the axes right at the end which is shared by all of them.

Sometimes if I am struggling I will use the search funciton.
I may know I will see and axes with 80, 90 and 100%.
So I will search for....
6553 7373 8192

Sometimes you have to fill an area to see the gaps and those gaps help you understand what they have done with the axes relationships that you dont understand.
Some areas will just be such a mash of axes and sequenced data its impossible to decipher what data relates to what and what axes they use.

It does get easier the more you practice, the more shortcuts you learn, the more you know what you are looking for to start with.

My advice is locate all maps and axes.
Label the maps in a sensible/searchable way.
I use the max axes and max values
So I might have 8192x7500 =<6500 as the label for the map.
That way I can sort by name and all the similar tables are suddenly together ;)

Then I can switch between similar maps in properly scaled 3d view to see how similar they are.
Last edited by Relic on Tue Aug 28, 2012 3:13 pm, edited 1 time in total.

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Re: Audi A4 EDC16U31 Map addresses

Postby taktijs » Tue Aug 28, 2012 3:08 pm

Thnx for the post, but I know how to find maps manually...but I need to know what to look for...and since I don't know what the selector map look like and nobody can/will tell going through the hexdump is pointless.

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Re: Audi A4 EDC16U31 Map addresses

Postby Relic » Tue Aug 28, 2012 3:17 pm

Is it selected by cooolant temp ?
What does a standard coolant temp axes look like.
Perhaps a search will throw up locations of contenders.
Make a list of contenders and discard the unlikely ones.

I would be looking somewhere around the tables being selected personally.
But I may be wrong.
I guess tables which invoke duration might have the selector.

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Re: Audi A4 EDC16U31 Map addresses

Postby RPM freak » Tue Aug 28, 2012 5:36 pm

Little hint - Duration switch has SOI in X axes.

One more thing - You DO NOT need duration switch map for a remap, so i can see why are you looking for it. Looking for it is waste off time for you.

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Re: Audi A4 EDC16U31 Map addresses

Postby taktijs » Tue Aug 28, 2012 6:04 pm

Well if I want to inject more then 60mg then I need to update the SOI and duration tables. And for that it is good to know which tables need to change and which can be left untouched...

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Re: Audi A4 EDC16U31 Map addresses

Postby tajfun211 » Sun Oct 11, 2015 12:50 pm

1DA27C - Duration selector.
You do not have permissions to view the files yet. You have to be registered and you have to make at least 3 quality / unique posts.

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