Midday express service was added with J service continuing to run express in the peak direction between Marcy and Myrtle. Surveys of ridership at local stops found that service could be adequately provided by midday M service. The running time for skip-stop service from Parsons Boulevard to Broad Street was 48 minutes, compared to 54.5 minutes for all-local service and 52 for the E. It was expected that 2,250 Queens Boulevard riders would switch to the J and Z. To make J/Z service more attractive, all trains on those lines consisted of refurbished subway cars that were quieter, graffiti-free, and had improved lighting and new floors. All cars on the J/Z were expected to have air-conditioning by summer 1989, which was expected to make it a more attractive alternative to the E.