Most 2v rev limiters are set at the factory to a specific RPM - box code GTG3 for example is 6050 RPM - and that would be typical for a 2v. There is also a speed limiter - on some models it is pretty low, but in a 2v, it's like 180 MPH - something 99.9999% of cars are not capable of hitting.
FYI - The factory rev limiter cuts fuel, not ignition. And NO it's not dangerous because it cuts so much fuel that there is not enough potential energy to do much damage.