Originally Posted by focusmaniaczx3
i dont know what kind of header that is. i have never heard of it and my guess is that the header is garbage. post a link. the best and ONLY header that you should even give any consideration to is the SVT focus header. it is a stock exhaust manifold/header that came factory on the SVT fdefineocus and it is the BEST on the market. it WILL net 15whp at least every single time. to put this header on your car you need the SVT header, SVT flex pipe, SVT cat or cat delete pipe (commonly referred to as an off road pipe), SVT dipstick tube unless you are feeling brave enough to bend your stock one into place and running the risk of breaking it, and the SVT power steering line unless you use a BUNCH of header wrap and want to run the risk of eventually getting your stock power steering line very hot and exploding it. it generally runs between $300 and $500 for a complete conversion kit depending on how patient you are to wait on deals. most other long tube headers are lucky to net 5whp and they delete the cat, which is a problem. the ramhorn style headers which keep the stock cat might gain 2whp if even that much. the SVT header still has a cat unless you run a delete pipe which means its still 50 state legal, even in california. they cant say crap out there because it is a FACTORY exhaust manifold.
technically there are ways around passing emissions. you can make an o2 cheater from $10 worth of bits and pieces from radio shack that will fool your ECU into thinking that the cat is still there and functioning properly which will keep it from turning on your check engine light which will get you a pass when you get your car inspected. this will NOT pass inspection if the place is very thorough and does a visual check to make sure you have a cat and/or if they do the snorkel emissions test which is the one where they put a probe in the tail pipe to measure the emissions. another option is to just get a tune which will turn off the rear o2 sensor all together so you dont get an engine light and it will also give you a bit more power and will ensure that your engine is running safely with the mods you add.
Thank you for the information I really appreciate it. but yes I'll go ahead and post the link so you can see the header but I thought I'd post up on this website first because I've had good results with asking people here first. But the option race header in SvT header look the same. They both have the same 4-2-1 design. But I was thinking about getting those and then cutting my catalytic converter in and I'll be in right after the flex pipe if anything.