@Leedavies_S3 was this sorted in the end? The intake n205 correct the problem?
I have all the same, done everything of the above namely, Plugs, Coils, PCV, Catch tank - going to send the top set injectors in for cleaning within the next day or so (was done about 12 months ago)
I am curious as although im getting multiple misfires on Cyl 4 which is leading me to the injectors i had and still have this issue with the Over performance Camshaft fault (I think its P0011) which might be attributed to these listed above.
wouldnt it be better to switch 3 and 4 injectors around to see if that shifts the problem to cylinder 3 first?