Yes, the effect is very good. After using my Passat, the acceleration response is smoother than before, and the feeling is more obvious when starting to accelerate. Especially the fuel consumption is much lower than before. In the past, the minimum fuel consumption of single high speed was 6.8L/ 100 km, but now the low speed+high speed can be reduced to 5.3L/ 100 km, which is really incredible.