Nissan GT-R - 0-300km/h
GT-R stage 2 (milltek exhaust, Cobb ECU - all worth 4000€ )
0-100km/h 3,4sek
0-200km/h 10,5sek
0-300km/h 33,3sek
Measured by an owner using Driftbox on german Autobahn.
Also, in current Autobild Sportcars is a comparison featuring 585hp Novidem GT-R (ecu, exhaust) and BF Gallardo GT600. At 0-250km/h, they were apparently neck and neck. GT-R was faster on a track by a little margin. Could someone post the results ? They are not available in the article.
Novidem hopes to build a 750hp, 1500kg GT-R. It also seems the GT-R powertrain can easily sustain a lot more power now with tamed launch control.
http://www.autobild.de/artikel/novidem-gt-rs-gegen-bf-performance-gt-600_933886.html