I got a new header and different o2 sensor on( the old header was warped and had a leak) and started driving it. This morning I pulled up to a stop light and the car died. First it started idling real low and died. I tried starting again and it started but I had to keep giving It gas to keep from dieing. I adjusted the idle 3 days ago due to low idling but now it just adjusted to low idling again. Is it just an idling issue? What is it? And how do I fix it

 

is your timing okay?

Is your header leaking anywhere?

 

I don't think my timing is off. When I adjust it yo idle higher, it just ends up idling lower to the point where it is about to die. Also it doesn't have really much power. Quite slow

 

But not much power, I mean it goes as fast when Im not pressing the pedal much vs when it's at the floor. Not accelerating much

 

I don't have an exhaust either... due to needing repairs so the exhaust system ends at the header. Could this be apart of any of this?