My 2014 s has 72000 miles on it. There is a borla exhaust and K&N cold air intake installed. Last week it started jerking when I accelerated from stop. 2 days later, it started stuttering really bad upon acceleration and almost sounded as if it was flooded. The RPM'S increased with peddle to floor and no take off. I took it to the dealer and after 4 hours and a 65 dollar charge, I was told something is wrong but they had no idea till I got a CEL. I change the oil every month and half since I drive about 5000 miles in that time frame. I cleaned the mass airflow sensor with CRC sensor cleaner, replaced the spark plugs, and added seafoam to the gas tank. All this didn't help. I now have a CEL. Auto store gave me a code, P2820 pressure control solenoid J performance/ stuck off. My last visit to the dealership I was told they don't rebuild tranny's just replace. Has anyone else seen this or know how to fix it. I really don't want to drop 3K on a replacement transmission.