Update: Car was tune
Very happy with the results car made 370rwhp @ 18psi. didn't try to push anymore boost as my injectors (nismo 600cc) are around 90% duty cycle. so not sure if the injectors are alittle old and need to be flow test and clean as they were used in my old gts-t track car (with gtr plenum setup)
Power delivery is much better compare to the N1, lag is reduce and car pulls very hard, overall very happy with the result as i didn't want to push the engine too much as i want it to last.
Few issue however, the H/C Supplied with my pfc does not work seems to be the wrong type (just freezes on start-up) so will have to look at getting the correct model. I used the o2 supplied with my gt-ss which were from an r34 however due to them being a different type they didn't work, so they are turn off atm on the tune. Also the tuner would like the car back when the weather has cooled down so he can just double check the cold start setting etc.
So now its just back to the track and see how much improvement the upgrade will make on my time, the aim is to move into the low 57 (was currently on mid 58)
Next on the less will be cam gears would will hope off doing them until i do the timing belt and do it all in my hit. Also need to connect the sensors for my defi gauges, unsure if i will go oil cooler or just buy a sandwich plate atm, i know oil cooler is a must for track days however i want something with ducting that will give good cooling