Hey guys.. Finally fixed a problem that made the car judder between 3500 and 4000rpm. Thought it was a VAC leak, but turned out to be an electrical wire that goes to a gray box i dont know what is tbh.. (It is connected to the DV and has many hoses on it), sorry for my mechanical disability. But now we have another problem! My S3 is pouring out black smoke. Especially if you give it som throttle after idling. The idle is also very rough, and the car feels slower than it used to.. Oh and i struggle to get lower than 25l/100km in mileage.. So does anybody (Tuffty??) have a clue what this might be? I do know that black smoke means it is running rich, but is there a common solution to this? I did a VAGCOM scan and this is what i got; 4 Faults Found: 16514 - Oxygen (Lambda) Sensor B1 S1: Malfunction in Circuit P0130 - 35-10 - - - Intermittent 16486 - Mass Air Flow Sensor (G70): Signal too Low P0102 - 35-10 - - - Intermittent 17963 - Charge Pressure: Maximum Limit Exceeded P1555 - 35-10 - - - Intermittent 18010 - Power Supply Terminal 30: Voltage too Low P1602 - 35-10 - - - Intermittent Readiness: 0000 0000 I Have tried to switch out the MAF, but this did nothing to either idle, or consumption. Black smoke stayed too. I do see there is an intermittent fault on the O2 sensor, but when i tried to log it in VAGCOM i did se signs of life from it, though i do not know what the values should be. So, can different things trigger fault codes on these parts? Any help is appreciated! EDIT: Forgot to mention, the car also erratically jerks a lot if i touch the throttle just a tiny bit. Not on WOT or at half throttle, just partially touches the throttle. And i do think it jerks the same when i let the throttle go at speed too.