Hi there everyone. I just recently joined this group in hopes I could get a little help. I own a 2013 dodge dart rallye with the 1.4 turbo. A month ago I had changed three of four sparks plugs but could not change the first one due to the engine not running and not being able to remove the hoses. After two days driving my car got rough again and i remembered I needed to change that spark plug so I did. When I did I had seen some gas or oil buildup inside my cylinder. I assumed because my plug was not good it just didn’t completely burn. After changing the last plug my car ran well for a day and then it started to run very rough. Engine shakes, smoke emitting, not much power at all and a horrible smell from the gas or oil not burning. I assume it is my injector at the point or my ignition coil. I’ll attach the codes but any help would be appreciated. I’ll be doing labour at home. Thanks again and cheers! Codes: P0302 , P2097 , and states turbocharger underboost. Some other codes popped up but just for sae reserved and anti lock break system.