You can purchase a custom burnt chip to remove the govenor on your car. I am not sure if there is any other way but that to do it.
I had a chip in the AssassinVIIIor, and had it up to about 150ish, but had to back down because there was no straight road left.....so it is possible to have it moved from the 130ish that the factory set for it. If you have a chip burnt, you have to tell the person you are ordering it from that that is what you want, the govenor removed.....most will just simply move it up, not remove it all together.