Hello everybody,

I don't have a lot of experience in playing with maps, so please don't be so harsh with me... We are specialized in hardware repair on ECU's and other electronical equipment.

I have a 986 Boxster S 2001 Tiptronic, on which I changed the engine because of a IMS failure. The old engine was a 3.2l with ME7.2 ECU, the new engine is a 3.4l. The new engine has Variocam+, so I could not use the old ECU, which has no support for it. The original ECU ME7.8 for this engine could not be adapted on the car, because of too many differences regarding the other modules, and because ME7.2 has classical lambda sensors and ME7.8 has wideband lambda sensors.
So the only possibility I had was to use an intermediate ECU, ME7.8min. All was great, I managed to set up all the wires and the engine runs very smooth and there are no errors. The problem is that I have very little power. The engine load in full throttle and the spark advance are very low (max 50% and max 20grd).

With the help of Sedox Tuning I recalibrated the maps for the different size of throttle body and different engine capacity. Still no improvement. I tried to mess with KFWZ (1,2,3,4), KFZWOP (1,2,3,4), KFMIOP, KFPED, KFMSNWDK and KFMIRL but the results were pretty the same - no clear changes no matter how much I played with the values.

So I am not sure what limits the power of the engine - the load or the advance. First of all, for tests, I want to deactivate the torque monitoring, to be able to see if the problem comes from this side. As I understand from previous posts, I have to put all values of KFMIZUOF to 99.6, value for TMNSMN to -48 and value for TANSMN to -48. Please let me know if I understood correctly and please tell me any other ideas you may have.

Thanks a lot for your support!

Thanks a lot for your reply.

I really don't know if I have correct MLHFM... How can I test this, as the ME7logger is not good for this ECU (cannot obtain a complete ECU map for my file)? But the firmware I am using is from a vehicle with the same MAF as mine.

These days I tried a lot of eprom firmware (original, not modified) from different engines with same ECU, including the Carrera 3.8l posted here on this forum, and besides some problems with communication between modules (ABS, Tiptronic) the general power of the engine remained the same. The firmware that I worked on did not rise any faults. That fact that all firmwares seems limited in the same way (doesn't matter if the communication with Tiptronic is ok or not) leads me to an assumption that it could be an unreported communication problem with Tiptronic and that keeps the engine at low torque. But it is just a supposition, I have no way to test...

Thanks again for trying to support me.

Post your original and modified files, but for all I know, sedox=clueless copyshop

Sorry, I posted twice the original file and I could not erase it. You can find attached here the modified file.

The file from Sedox has very little difference in the power of the engine...

Yes, sure.

The changes are very slight. A few degrees of timing, a few points up in irl, 100 rpm increase in rev limit, etc.

I tried a lot to make ME7logger work with my car. The error that I could not avoid now is:

found wrong mapping table pointer value 0x0084F2EC

I attached the original file, the .ecu file, logger config and the log file.
Please if help me with this (I know that this software is made for ME7 from VAG group, but I still hope for a solution...).

Thanks.

Thanks for your reply. I have Durametric, I have also Piwis 2, but they are not useful in my case. No evidence of what is limiting my engine...