I have a question about Headers. I did a search but found nothing. I installed the Pacesetter header, Pacesetter Hi flow Cat,
Flowmaster Muffler, and a Pacesetter tip and now it wont idea correctlly. It idle's at about 200rpm's so I turned the idle screw up just to keep it running. Do you think I need to replace the O2 sensor or is it something I forgot to do.

 

Does it keep stalling? Check the air hose connections between the AFM and TB.

 

No it dosent stall at all it just runs at a very low RPM. I had to turn the idle up just to keep it running. I did not change tho O2
sensor and I tried to be very careful when I removed it and installed it in the new header but I still might of damaged it not sure.

 

Kind of sounds like there might be a vacuum leak somewhere.

Are all of the vacuum hoses in your engine bay hooked up?

 

I will have to check on that. I didnt think about that. Thanks