Audi 4.2 q7 petrol injectors 2007
 

I'm going to replace my injectors with new ones do I need to have them coded

Replaced injectors
 

I replaced injectors on my 2007 q7 4.2 petrol motor same time did o rings on oil filter housing fixt all my problems codes comg up misfire 1 3 and 7 usaly Those are the injectors leaking killing the spark to those cylinders when trying to start I replaced all 8 now the car starts mint every time

Q7 4.2 petrol filter
 

can someone tell me were the petrol filter is on my 2007 q7 please thanks

Just a question, did you have to remove the fuel rail to get the injectors out? Or can the injectors be removed without removing the fuel rail? i.e. once the intake manifold is removed can you proceed to remove the injectors or the fuel rail also has to be removed?