I'm getting obx lt's on my truck for x-mas, along with o2 extensions and stage 8 bolts. when i do the headers I'm doing the rest of the exhaust too, 3" stainless with a magnaflow muffler and dual exit, along with that I'm eliminating the resonators, and getting rid of the stock cats for 2 high flow magnaflow cats, Is there going to be any check engine lights or anything with this setup? Its going on a 97 F150 5.4L.

 

you dont have resonators. you have 4 cats. i believe you can remove the rear two and replace the front with High Flows and still be ok.

 

I know the stock setup has 4 cats, the obx headers come with resinators, which I am removing the resinators off the headers

 

Get some decent gaskets for the manifolds as well. I went with sce copper gaskets

 

where did you buy your gaskets at? I cant find any good copper gaskets anywhere.

 

I just bought them locally

 

Not to burst your bubble, but OBX headers are cheap (speaking from experience). the flanges are thin and even their "stainless steel" headers rust out fairly quickly. I would invest in some VERY good gaskets, aneeled copper is pricey, but def. worth the money.