Stock Motronic Ignition Map

[karlo 1]

Bit the bullet and wired up some junk to read out the eprom from the Motronic 0 261 200 161 from an MI16 (DFW w/cat). This is the result: http://people.opera.com/~karlo/visa/0261200161.bin.

 

The eprom decodes to something like this:

.

 

Not sure about the idle timing map, but it doesn't really matter much.

 

- Karl

[cybernck 400 1 Cars]

that's great, can you post a screenshot of a fuel map too?

 

have you tried editing it and burning it back yet?

[Super Josh 4]

That looks interesting Where did you get the editing software from?

 

 

Josh

[Guest Le JC]

Hi guys,

 

My comming gift (If you don't already have):

 

EPROM GUTMANN G1 for XU9JAZ :

http://www.partage-facile.com/141903-gutman.bin.html

 

EPROM 205 Gti 1.9 XU9JAZ stock :

http://www.partage-facile.com/141904-Peuge...(F6B3).std.html

 

EPROM 405 SRi 1.9 XU9JAZ stock :

http://www.partage-facile.com/141905-Peuge...55643_.bin.html

 

 

I try to read them with WinOLS but It's not really my job

 

An expert advice ?

[RossD 43]

Out of interest, what RPM is peak torque on that engine, looking at the ignition map, about 3400 - 3800rpm?

Interesting to see the different gaps between load and RPM on that table, quite fine at low rpm but very coarse at higher revs!

Edited October 23, 2008 by RossD

[petert 550]

Good work on extracting the data, but unfortunately it's only of use to an engine fitted with the 161 or 158 ecu, the lower compression XU9J4Z (DFZ). As the compression and efficiency increases you need far less advance, typically around 26 deg. for a D6C. If you do a search you'll find some curves I've posted for a high compression (11.8:1) engine, which has around 24 deg. max. at full load.

 

Here's the 139 bin file for your interest:

 

http://www.taylor-eng.com/ecu/139.bin

 

Are you sure you've extracted the right part of the file? My 161 full throttle file has 3400-3800 at 30.0 deg., running down to 27.75 at 6400rpm

Edited October 23, 2008 by petert

[Guest Le JC]

Just one question :

 

I want to purchase new EPROM on e-bay. Is that ref is correct for a Motronic (is there many different models in it ?)

 

UV Eprom Typ 27C256 - 120ns - 205ns

 

Thanks

[DamirGTI 323]

How do you open this "bin" files ? WinOls possibly ?!

 

Also , im having here near me Motronic ECU with last three digs 162 , anyone got read out from the 162 ECU eprom

 

Damir

[karlo 1]

Been a while since I was on this forum. Thanks for the 139 eprom. There are two timing maps in this one, they are almost identical. I'm not sure which one is used under what circumstances. Never mind the idle map again, just BS.