Hello dear ones, I need your help. Drive a w221 bj 2007 approx. 290 tkm. My Benz has been on the highway for a long time when accelerating from 120km/h into the emergency run. In urban traffic everything is fine, I can speed up according to mood, without loss of performance. Emergency run only from 120km/h. The good piece was read by SD and the following was displayed. [The limit value of the component B2/7 (hot film air mass meter on the right) is exceeded due to offset drift. nkt 2 is exceeded] and an error is due to the loading pressure controller. I don’t know exactly which error was stored now. The colleague from the workshop thinks that also the vlt is defective or it has something to do with the LMM. So first of all a used and tested LMM-bosch with 12 months warranty worried and built in. Errors could not be deleted, off on the track and zack emergency run, then we noticed that the air filters really shitty off So also the new ones were made. Values of the HFM drift compensation reset Reset the air filter values after air filter exchange also made. The LMM were tested by SD and were good. The colleague also tested something with the charging pressure, where the SD gave gas independently at several intervals, also successfully completed this test. The error could then be cleared. The car drove much better, reacted to gas shocks much more directly and I think that he also much I could also notice a slight improvement in consumption. A few days ago the first time again on the highway and again in emergency run, this can be fixed again by new start of the engine. The MKL only lights up when I bring the engine several times on the track in the emergency run, in which I abruptly accelerate. Today read out again by SD and the same two errors. Tomorrow he wants with a Side device check certain components for leaks. I hope you can continue to help me. Does the LMM error cause the charging pressure regulator to be defective? Is it the charging pressure controller? If I need a new charging pressure controller, which one do I have to get? There are many different ones. Can’t see which one is installed with my now. See only the number Hella 6NW 009 660 is the right one at all? I know the previous owner, who had renewed it.