Now there are two main brands of ECU in Chengdu: Eisen and Max. Max stands for SEDOS in Sweden. Eisen stands for allcartuning EPC, and there is also a CMD mai or seed, which is said to be a national chain. You can search online. Basically, the information competition between the two families is fierce.

There seems to be an MT or something, but he only pays attention to European Volkswagen and Audi. However, it seems that this is only a subsidiary project, and it is not like a general procedure that the main business is doing and using. I'm not sure about it. This may be wrong. I'd better ask myself.

Different computer versions and different calibration values of ECU charge different fees.