The problem is that my car randomly looses power when going at higher speeds (90-120 km/h). Otherwise, the car starts without any issues and runs fine in the city. The codes I get are P0089 and ECM-2900, both of which seem to indicate a problem in the fuel delivery system. It seems the issue is aft...

Alright, I will take a look at that. Could it also be the MAF sensor or the ETM itself failing? From this thread, it seems like the MAF sensor failure might be what corresponds the most to my issues (idle running fine but stutters at highway speeds) : https://www.matthewsvolvosite.com/forums/viewto...

ask xemodex if they also cloned the eeprom chip.
if they did then ask these guys.

http://nefariousmotorsports.com/forum/i ... 34.0title=