Hello. My name is Robert. Suddentli I lost motor power, and engine only want 2850 rmp, and motor light came up. I changed the MAF sensor, and i got the power back, but the motor lamp still ligh up. Then 2 days after, I suddentlig lost power agen, and now it only want to go up to 2000 rpm. I get the OBD2 code P0400. Then i did take off the EGR valve and clined it properly. Still the same. The OBD2 signals i get is that vakum is -14,5 psi, and when i hit the gas pedal, it vill not get up, it stays at the same. Normaly it vil move up when i hit the gas and i get boost. Sorry for bad english. I m from norway. now the maf signal alsow is 0 gram. When i dissconnect the Maf, i can get 2850 rpm. whwn i disconnect egr i get no differrent.