AFAIK, no Nissan production GT-Rs have the titanium turbo blades fitted on the turbos. In terms of Japanese production cars, the only ones that I know of that have these type of turbo blades at the moment are the Lancer Evo VI and VIIs.
We have done a quite a few up grade on standard R32/R33 and R34 turbo,s using titanium exhaust[turbine ] wheels the results we got was that they spin up as fast as standard turbo,s i.e ceramic turbine wheels. You can run up to 1.3 bar boost as quoted by Guy on the previous thread about turbo,s. Good for approx 460/480 bhp depending on your other engine mods.
My fully stock BNR34 regularly runs at .95-.99 bars, it went up to 1.07 bars at a cold foggy morning
Yes we read our boost level on the multi function display.
And yes the higher I rev the motor, the higher the boost goes, so I would assume the motor hold high boost at high rev. I never look at the MFD when I am revving the motor high, as I am too busy shifting.
Dino.......yes we actually do, it gets cold and foggy here in the morning and at night, man the boost response is a lot better in that condition, I have seen intake temp. as low as 13 degrees Then in the afternoon, the summer weather comes back, Southern California weather is amazing
But you would never find out if you never come over here
lightspeed... AFAIK, boost is measured at inlet plenum. As for the standard turbos, they are fairly capable. I was running stock cams, stock cam gears and stock turbos on my R34 and with 1.2 kg/cm2 of boost (and supporting bolt on mods) was able to get 502ps to the engine. Goes to show that the flow of the standard turbos at 0.93 kg/cm2 to redline should be no problem.