Dear Garage Menace,
I just bought 2004 Skyline V35 350GT, and the speed limiter can be removed. There are two options, option 1 you can install speed limit defencer (SLD) by HKS with some wiring works which they call "level 1" or you can remapping/reprogramming your ECU without any additional equipment added or wiring works, which they call "level 2". The cleanest way is option 2 but you have to make sure the mechanic really know the stuff they are doing and according to the my mechanic the programme comes from Nissan Japan and they have done it alot over here in Malaysia and it will take about 1 hour to remapping the ECU. In Malaysia is cost about Malaysian Ringgit 1200.00 for level 1 works and Malaysian Ringgit 1800.00 for level 2 works.
