Ok wanting more performance....I have a 2003 Blazer 2WD 2DR. I've read several posts about headers and I'm a little confused. Does mine have AIR injection? Besides the headers which I found are about $600, is there anything else I need to bolt these up? I have a K&N FIPK & Gibson catback on it now so headers should give good results.

 

In the glove compartment you should have a sticker with a bunch of RPOcodes on it. Get the codes then you can find a code deciphering page here.

https://blazerforum.com/m_21168/tm.htm


If you have the code for air injection you have air injection. If not you are good to get the cheaper set of headers.

 

SO besides the headers do I need anything else to make these work? I noticed it said something about "spark plug boots" being modified or elongated or something.

 

Do you have a link to the web page where you found these headers? I am going to use the JBA headers, when I can afford them and I have never seen any notes like that about them. I will get them from summitracing.com .