Ok So I want a set of headers. I searched around and couldn't find the answer I was looking for, I want to know if I will set off a code whenever I install them. I plan on keeping the stock cats and also the stock piping between the header and muffler for now. I plan on buying the pacesetter headers and I don't want any problems with emissions whenever inspection rolls around. I'll have a hard enough time with passing inspection with no airbags. Any help is appreciated.

Bro, if your gonna get a header(singular if you have a 4 cylinder), than you should also get a catback. It wouldnt make sense to open up the airflow from your exhaust manifold, than still have the poopty stock exhaust. Run 2 1/2 inch piping from header to muffler. Thats what I did and it sounded pretty damn good for a 4 banger.

That's what I plan on doing. I want to buy the headers now and install them while I have some of the engine torn apart. I wont be driving it until April or May and I'll finish the exhasut then.