Fuel injectors require coding to cylinder?

[German_Hwip_85]

Hi All,

I have recently replaced all 4 injectors on my 2003 Polo 9n 1.4 16v 75bhp BBY engine.

Just wondering if they require coding in?
I have heard that this is sometimes required on certain cars when an injector(s) is replaced.

Car is still idling rough but it is better than it was since changing the throttle body, injectors, coil packs and EGR valve and cleaning the MAF sensor lol.

Failing that, I guess I will have to get a garage to try a throttle body adaption. I have tried this with my Autel AP200, but I am not 100% that it is running the full procedure that something like a VCDS lite system runs.

Anyway, just wanted to know the answer to the injector coding question really.

Thanks in advance.

[Maarten]

9N/9N3 do not require coding for injectors

[German_Hwip_85]

Thankyou!