Quote Originally Posted by NegativeOne13 View Post
Yes headers will take care of the u-bend. Now another issue you may come across is majority of them don't come with cats. If your state has emissions testing, grab yourself a cat to put on there. Read the header thread, offers a lot of insight on headers. And since I did not see what year this vehicle was, 04+ need to have the O2 harness extended. If you are tech savvy, cut the wires and extend the harness yourself. I did it with some heat shrink tubing and soldering iron. Pretty simple.
They have emission testing in my state but I registered the car somewhere they dont require me to test so that shouldnt be an issue. Will I have a check engine light since there wont be a cat? The o2 emulator ( I forget where I saw it (w-body store?))will fix this right? I am very experianced with a soldering iron so I am very capible of making my own o2 extension harness (if required), Assuming its nothing more than just extending them. 10* of knock retard seems like alot to me. Should I remove the supercharger belt till I get a set of headers? For people coming into this thread late, this is a 2001 gt with a top swap. Man, you guys are helpful as hell..