How fast will a 190 horse power car go?

It depends on gearing, aerodynamics and if the car a limiter(most due now a days, atleast in the US) An example most VW's now a days have 200hp and most are limited to 130mph.

compact/mid size cars would see around 140mph

1995 prelude 2.2l 190hp - 140mph

1995 Nissan Maxima 190hp - 142mph