With some chips you have to ask the programmer to remove the limiter.
Were you doing 90? Maybe the speedo is off. If someone removed the needle, maybe it was put on wrong. Maybe the needle is sticking? The speedo's on our cars are not that accurate in the three figure range, but 90 max is unusual.
Have someone ride behing you at the speed limit and see if your speedo is at least right at 65 mph.
Finally, ninety is pretty fast anyway. Unless you are racing at the track, the limiter will keep you from getting to far over your head. If the car runs well otherwise, I wouldn'y worry about it unless the speedo is wrong and causes you to get speeding tickets.
