Servus together I have a question that has been asked certain scon thousand times. I am thinking about whether I am putting a sports air filter or a sports exhaust system underset at my escort 1.6l 16v bj 96. I am less concerned about the acoustics but about getting ahead. I have already tried out my escort a bit in things air filter( time measurement 0-100 standart then without plug on air mass meter and without air filter I have also driven on clean road times and have determined without air filter the time measurement was 4 sec faster) and in things sport Auspuff it is actually about that the engine has less exhaust back pressure or am I wrong? I had there but other experience can make then at my polo86c, since I fell off the end pot and the car was no longer out of ass. 130 was celebration evening without end pot! please to clarify what brings something greeting Marcel