d15b vtec Fuel Cutoff?

Just wondering when the fuel cutsoff in my stock 93 lx it would cut off at 180km/h yesterday i hit 190 km/h with the d15b vtec and it was still going past 190, ran out of room, so does anyone know?

i dont know i have a slightly different problem. my vtec doesnt kick in and i cut off at 6k rpm. i think its my usdm ecu i dont know do u have any answrs?