The speed limiter, I guess you mean when they cut off your fuel suppy. The computer chip will cut off the fuel supply when you reach very high RPM, the computer will protect the engine and cut off the fuel suppy when you are way over the red line. So, it really have nothing to do with limit you speed. But it should cut it off at about 115mph. You could re-program the chip to bypass this, but if you do not want to blow engine, I won't do it.