ok heres the REAL info..this information is directly from Sean Morris the guy who drives the yellow "big bird" skyline...anyway sean works for motorex and was directly involved in building this car...here is what he says:
"Since I was directly involved with building , dynoing , and testing the R34 in 2Fast2Furious - I can let you know what it actually made....I dont have the actual dyno charts.... but...
At 1.0 bar of boost with the AX53B60 turbos it made 400 hp to the rear wheels on a Dynapac dyno and 92 octane fuel...
Later on 1.3~1.4 bar made 440 hp to the wheels under the same conditions.
Testing with Motor Trend it ran 0-60 in 3.91 seconds and 12.3 in the quarter mile. It was tested with Car and Driver Magazine , and Sport Compact Car Magazine all getting similar numbers.
After that - the car was never dynoed or actually tested again... all the extra other "HKS" parts never went on the car...... The NX nitrous was never used or tuned.....
Was it a 500 hp GT-R ? Sure about that at the motor....if you want to use it - then feel free..... is it anything else.... no...."
thats what he said....and he built it so he sould know...