dobro nam doso

After about 1 year of going trough various books, manuals, forums, etc. (as my free time allowed) studying on how the ME7 operates and how to modify it, it is time to revive this post .

Reading the ECU
After building a harness for bench testing the ECU, I’ve managed to successfully read/write the ECU using boot mode and galleto cable. The same harness using a dummy K-line cable has been successfully used to read the immo EEprom with the ME7_95040.

Modifying the maps
In order to switch my fueling back to ME I did the following modifications on the map:
-   Adjusted KRKTE to accommodate my new injectors using calculations mentioned in the ME7.3.1H documentation (found on this forum);
-   Adjusted KFMLDMX to match new airflow and not to trigger MIL;
-   MLMAX has been left as it was so now based on the explanation in the documentation the load can go above 100% when under boost;
-   I’ve slightly increased KFMRES and KFMRESK since now I’ve had occasional engine stalling, when engine was at operating temperature, when returning to idle. (I hope this will solve the issue)
-   Adjusted KFMIRL based on previous logs (when MS was controlling the fuel) and with some help from a spreadsheet tool found on this forum,
-   Recalculated KFMIOP to match KFMIRL and re-interpolated KFMDS (using the same tool )
-   Re-interpolated KFZWOP,
-   Adjusted LAMFA and KFLBTS,
-   Increased KFSZT on revs where boost Is reached (ME7.3.1 does not have a separate table to increase dwell in relation to rpm/load)
-   Adjusted KFZW under high load,

Pending modification
Since now I don’t have any more stereo exhaust and stereo lambda control, I was looking for a way to disable all the calculations based on 2nd precat lambda used for bank2 injectors. I’ve found a few parameters in the documentation that might do this:
-   CWKONLS (code word for configuration lambda sensor) where you specify hardware configuration of lambda sensors. I think this is just used to enable hardware ports on the ECU. It is a part of PROCON function. I’ve also found the address where this is located in bin file.
-   SY_STERVK (system constant condition: stereo exhaust system upstream of cat) which is used in function GK (mixture control), LRA (Lambda closed loop control; Adaptive pilot control) and LRAEB (conditions adaptive pilot control) however I can’t locate this in the bin file.
-   SY_STERSY (System constant Condition stereo Lambda control symmetrical) based on the diagram for LR function (lambda closed loop control) I understood that this “switch” would apply correction from Bank 1 also on Bank 2 (which is what I would like) but I can’t locate this in the bin file.

If anyone has some ideas/suggestion on how to solve this or how to locate those parameters I would really appreciate it.

I’ve attached original bin.

Best regards,
Nenad

Tnx!

The XDF file for GTA I didn't have. The Damos I have. I've used that as a base to find all my maps.

I don't know why, but locations of some of the maps matched perfectly while most of them had different offsets in the addresses. So I've used a 2.0ts engine map that I've read with galletto to find all the offsets (the map content was the same so it was easy to track ).

Just out of curiosity, there are no.2 .dam files in the zip. But I can only use one. The other file that has .dbf.dam extension I wasn't able to use. Do you have any idea what is that file?

I've just read the tread. It is a nice trick. He disabled factory lambda diagnostic so he could remove them from the car and used the wide band controller to simulate narrow band for both banks.

I guess I could try this for now as I already have WB lambda installed on the car.

I've tried to look for the parameters mentioned in the thread but i couldnt find:
CDLSHV and CDLSVV.

However, I've found the following parameters in the damos for ME7.3.1:
- CDLSH (code word lambda sensor diagnosis behind KAT in OBDII-Mode (invers: Europe mode))
- CDHSH (code word heating diagnose after Kat (CDHSH = 0 => no diagnosis)
- CDHSHE (Eurobit for output stage diag. of lambda sensor heating downstream of the cat.)
 
- CDLSV (code word oxygen sensor diagnosis upstr. KAT in OBDII mode)
- CDHSV (code word heating diagnose upstr. Kat (CDHSV = 0 => no diagnosis)
- CDHSVE (Code word DHLSE power stage of heater for diagnosis pre cat)

So in order to disable lambda diagnostics for lambdas before the cat I should set to 0 following:
CDLSV
CDHSV
CDHSVE

If I want to disable also lambda after cat, then I should also change:
CDLSH
CDHSH
CDHSHE

and set CWKONLS to 17.

Today I went a bit trough the ME manual. I've found that since my ecu is from a non turbo car, the parameter SY_TURBO=0. This means that mimax_w is not calculated taking into account rlmax_w but using rlugd_w coming from RLVMXN (which I didn't change)

Could this cause mimax to be too low and the car entered limp mode?

Hi, may I kindly ask you for a KRKTE address location in me731. I need to install bigger injectors and can't find this info.
Many thanks.

Alfa 2.0 Me7.3.1 is not always on 18CF1 .
It depends on the model that the engine was installed ...

EG 156/GTV/147/166 etc and also if it was on Facelift or not ...