u/Anxious-Direction218

Hi.

I had one faulty injector so I decided to replace all of them while at it. After the change in getting a P0172 error, a very low stft of -17% and this sound from time to time. I already cleaned the MAF and it did not help. I'm thinking on putting the old injectors back to check if the new ones are faulty. Seems like the next step to me but what else could it be?