i have a tdr 125 which has the same engine as the dt. mine only does 75mph at redline. u can get a cdi from europe for dt/tdr derestricted. its definately the cdi that is restricted co i have got a aftermarket exhaust and a 17tooth front sprog. theres not much point spending to much on it cause ure guna want to see it in a while if u do your test.