Hello, I have installed a sports air filter (swammerl) in my S60 170hp. At the first start he dies after about 10sec in the stand and the message appears in the BC : Reduced engine power and engine system maintenance. I had only suspended the air mass meter (vehicle was ignition off). Then I called the ÖAMTC and this means according to his diagnostic system “The engine control unit is defective” How can this be ?? Is this connected with my air filter (which I now have to change again The car runs in the emergency running program i.e. it dangles, dies in a state immediately, runs after starting a few seconds, must be kept at speed (about 2500/min.) so that it does not die! Tomorrow I will go to a Volvo workshop ! Does anyone know advice ? Greeting Zekfu