So last week my exhaust grew a crack and started sputtering really bad. I decided to try and reset the pcm on the side of the highway and that made the issue magnitudes worse. So I drove it home and I fixed the crack and started it up again and there was still a leak. Then I realized the gasket was bad so I replaced that and now I head 0 leaks but the engine idles like crap and runs like crap. It intermittently sputters. And it’s giving me no check engine lights. I’m completely shooting in the dark here. I just replaced the spark plugs and o2 sensor with NTK ones 5k miles ago. It has a fresh coil pack. It’s like it wants to run so bad but it’s shooting it’s own foot.