Im not a engineer like yourself but am highly motivated car lover Ive had my skyline for 6years now and ive done alot to it myself so im not stupid as you are suggesting i am...iv used many tutorials that have been a great help in replacing afm,break pads, oil and oil filter,bov, pod enclosure, battery, boost gauge, stereo, vacumme lines etc. My tuner is great mate he owns a turbo and dyno shop in brisbane so I am 100% He would kno his shit and could find the problem straight up. Thats what i meant by "pro"...i never mentioned a normal mechanic would do. Its great when the help you ask for works but when it backfires you can only blame yourself for taking advice from a complete stranger.
Dont make this personal and start taking chips out of me ...Seems you got urself offended by taking things out of context. Im over trying to explain myself.
next time if you got nothing positive to say about someone dont.... and LOL at urself for spinning up a tornado out of a fart...