exhaust valve

Yesterday, I noticed my car had a CEL. I ran the diagnostic through my ecutek app and it showed 4 codes; screenshot below. I’m not able to feel a difference in power. I have not been able to find much regarding these codes by googling them, the most information I found was stating the exhaust...

I had a quick question and sorry if this has been answered before but i tried to search but did not find anything. Basically i am looking to purchase a RK TI Signature single exit exhaust but what happens when you delete the exhaust flaps? does it cause a CEL? any adverse issues to how the car...