Yep all that was done when the new cams were put in not that long ago....
the current problem stems from the tune being set to a base timing of 20, and this was achieved with the current CAS.... as the previous one had this problem also....
but on checking the base timing today its only 16-17 and car feels doughy above 6k....
they checked the timing by only using the black wire loop at the rear of the cam covers, and a timing light.... were as CRD used the first coil and a lead also with the rear wire....
hmmm..... I dare not ask what a new CAS is from nissan? this one was $200 second hand!