Hello everybody, I have W168 A170 my problem is car is not going more than 3000 rpm. If I turn off the engine and start again it start to going more than 3000 rpm but turbo it is not active. I went to the mechanic and we connected to the diagnose it said MAF we changed after it fix just for the one day. After same again it said turbo air pressure converter, we changed. After said EGR, we changed but it still same. I cleaned the MAP sensor it still same what should I do?