As far as I'm aware you'd either need an ecu tune/reflash or I think BMS sells a overide option for the limiter but it requires cutting an ecu wire and some soldering, so not for the faint of heart. They don't list it on their site so you would have to contact them to see if they still sell it. Personally I'd go with a tune if it's something you absolutely need. Also, make sure you have the tires to hit those speeds, dont go running blizzacks at 160mph lol