Im having serious issues with my 2014 GT. I've had it in 3 shops, including 1 dealer and they all say they can't find anything wrong with it. All began after cleaning the throttle body and Maf[Very carefully and correctly] and reinstalling. Afterward when I reconnected my negative terminal there was some kind of power surge and something near the PCM/Fuse box popped and smoked a bit for about 2 seconds. [Could be unrelated??]

Car starts great but the idle bounces a small amount real fast...

2014 Mustang GT MT82 - Drivability issues - No DTC