 The details of these trims varied from year to year.Introduced at the 1993 New York Auto Show, the main changes for the P10 came as a midyear refresh in April 1993 (model year 1993.5), when dual airbags replaced motorized seatbelts, leather interiors came standard with power front seats, matte-black side moldings were replaced by body-colored ones, the refrigerant was converted from R12 to R134a, the audio system was upgraded to six speakers with a CD player instead of the previously-standard cassette deck, and other new options such as remote keyless entry were added.In February 1994, the 1994 model year was given a new larger chrome-plated grille and door handles, a lowport engine (replacing the original highport SR20DE, in which the intake plenum is below the fuel injectors and fuel rail), a change in the vehicle's self-diagnostic system to OBD-II, and larger 195/65R14 tires.