I have a D 16 a6 wane my iacv is acting up I think, I’m getting a code 14 which is the iacv code and my idle is super rough and fluctuates a lot suddenly. I have a z6 head with iacv on it, can I use that one in my current a6? My car was running fine two days ago then I tried to start it up yesterday and at first it wouldn’t even stay started for more than just a second, then it started idling really really rough and blowing some white smoke. It started flashing code 14 which is for the iacv and I have no clue what to do. I was told to change the Iacv and the TPS. I have a spare of both of those as long as the Z6 one works for my current head