Y11 problem

[morefire24]

Car seems 2 be missing or holding back when i put on ths air condition, and when its off it still hols back and miss, but not as much, i took out d catalst thinkin that was the problem but it didnt change anyting, plz help

[Wolfstein]

(1) have it scanned knock sensor i believe or (2) timing chain (3) coil pack