How do you disable the governor on a 1991 Mazda 626?

It does not have a governor. there is a governor at least one similar. my speedometer goes up to 130, but at 115 a governor like disabling of power happens. please e mail me at mister_pk@snowboard.com if you have any answers. thanks it most likely is speed limited by the computer, the only way to bypass it is with a custom burned computer or an aftermarket performance chip