Well hello there unfortunately i wasnt there when they changed it i only know that they only opened the upper part of the engine and the engine was still in the cat right after the waterpump change we changed the oil {Motor craft} we didnt use any off brand or cheap parts because we’ve had this car since 2012 and it only has like 80-90k miles.
the car runs great while driving it pushes harder than ever but when its idling i dont feel like im in a ford edge i feel like im in a mustang with stage 3 camshaft
i did all the basics like i said
[sparkplugs,MAF sensor, vacuum leaks, valve cleaner]
it just annoys me when i stop at a red light and the car becomes a dancer.
any help would be appreciated