Modifying Motronic 2.3.2 ECU hardware and software.

[prj]

6x1 in M2.3.2.

First map for normal operation.
Second map for "Dauerklopfen".

[Acki]

Ui. Sorry I also don't find it

[Acki]

With wide band you can use the lambda heating control for some other stuff. ;-)

[-ice-]

ok, thx ;-)

[Acki]

Look for the lambda threshold table. Nearly at the end it should be.
Rpm only map. Values 190,160,140. Have to look into your dump. ;-)
It's the load until lambda control is active.
With wide band you can see this very easy. :-)

[-ice-]

I think i need to find a way to switch off the lambda control before i start to play with enrichment factors.

Bye

[prj]

Hi,

Was that irony?

Thx prj. So it's not good to trigger this limiter

To come back to FGAT. Yes it seems to be a FKT128 correction factor to enrich the mixture. In older Motronics they had coding switches on the circuit board to select FGAT0 to 4.
But in my opionion it wasn't meant as injector constant. It's more to adjust your engine to different fuel qualities...
But it would be possible to adjust the injection time with it. Hmm..

Regards

Too much talk. There is base constant from which all further pulsewidth calculation is derived. Change this constant when you change injectors (and TVUB of course), and all will be well.

[vwnut8392]

are any of you guys good with the hardware aspect of the ECU? i have a spare 4A0 907 551AA ECU that has been on a shelf for around a year. a year ago the ECU worked but when i went to use it today i get a no start. The original ECU to my S6 starts the car and drives fine so that rules out any of the sensors on the engine. i have fuel because i can smell it but i have no spark. this leads me to believe there's something wrong on board in the ECU that its not outputting a signal to the POS's. is there a common piece of hardware in the ECU that goes bad? is this ECU pretty much a paper weight now?

[-ice-]

Hi,

Was that irony?

Thx prj. So it's not good to trigger this limiter

To come back to FGAT. Yes it seems to be a FKT128 correction factor to enrich the mixture. In older Motronics they had coding switches on the circuit board to select FGAT0 to 4.
But in my opionion it wasn't meant as injector constant. It's more to adjust your engine to different fuel qualities...
But it would be possible to adjust the injection time with it. Hmm..

Regards

[S2central.net]

This thread is mad - pure mad - hugely educational - technically and socially.

[prj]

Hi,

as I have seen in the code, there is a second rev limiter (two bytes next to the normal limiter), which disables some code. Why do we need two?

Regards

The second one is the "engine speed exceeded" fault.

[-ice-]

Hi,

as I have seen in the code, there is a second rev limiter (two bytes next to the normal limiter), which disables some code. Why do we need two?

Regards

[doncecone]

Hi guys, do you know on the IGN map, on the load axis, higher number means more or less load? Thanks in advance.

[Acki]

@vwnuts: Don't understand me wrong but you are in nearly every Forum related to "hacking the motronic" and I have seen threads or let's call it "requests" for Information related to the motronic from you which are years old.
When guys like prj are not willed to give you information you are pissed.
Sorry but with some hard work you would know and understand much more.
You question shows this...

[prj]

tL = KFUN(MAF)/RPM