audi A3 8l 1.8 t 110kw Hello, I started to have an unpleasant anomaly on the car. When driving, it happens to me (completely irregularly sometimes in 15 minutes of driving, sometimes in 4 hours) when I change to a higher quality so the car stops responding to gas and I have no choice but to finish with the car and stop playing, then I grab it and start again for the first time and the car runs like nothing. it happens during a quiet ride of 2500-3000 rpm. but also at 4000+. after I stop the engine idles and when I hold full throttle the speed runs to 1800 and immediately drops below 1000 the engine makes a sound like it should snag but catches idle speed and after a while this repeats (I keep the throttle all the time. I tried I manually add gas through the throttle but the result is the same.Yeah and I have a blow-off valve on the car ... I wondered if it would not release too much pressure .... so far it has never happened to me that the car always wants the same scenario is repeated . Thank you in advance