Anyone any idea where I start? Audi s3 8p, just replaced the intercooler pipe cause I had a boost leak, from there I have had all sorts of problems appear. I have found a broken n75 valve so replaced that, and also got a new diverter valve as I was having flutter with my forge recirc (still having the same amount of occasional flutter) now the car is running lumpy and todsy engine management has came on with the p119a code, I'm going to check my main seal, but I think I got that replaced lately when I got my clutch done. I can't find a part for the sensor so I'm guessing it's the whole fuel pump? Or something else? Any help appreciated

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