I had my old 04 coupe up to 148 MPH, coming down off a hill @ 60MPH in a 2 mile stretch (it still had it's limiter). In the same place I had the SRT up to 186 MPH after I had come down off the hill @ 70 MPH, it took about 1&1/4 mile's to reach 186 from 70 on a flat surface (it has no limiter).