i just got a dc header and i know its gonna trip the cel light so what do you guys recommend me getting?

a cel eliminator.

do a search for "anti-fouler"

oh ok

both should work.. you'll spend a good 40 bucks for a CEL Eliminator where you could make your own antifouler fix for 3 bucks..

And the antifouler works about 80% of the time at best from what I have seen, so you may still have an issue.

The BEST one? If you still have a CAT in the exhaust, simply have a shop close up the bung for the second 02 and move it behind the second Cat . No antifouler, no overpriced and sometimes non working cel sim, etc. and you should have no CEL as long as you keep the second cat in the system.

I use this one but i didnt pay anywhere near 45 bucks for it. Never have had a cel.

http://weapon-r.com/english/index.php?main_page=product_info&products_id=6219

HELP brand spark plug anti foulers pt#42002 FTW!!

and if it fails like engifineer said, than your wallet is only a few bucks lighter instead of the other higher pricey options

^^^ spark plug... goes in behind the first cat? just use the weapon R CEL. i have had mine for 5K miles never a problem Yet.

or get the one on ebay thats $7. Similar to the anti-fouler trick, it's just an extension.

Link (http://cgi.ebay.com/ebaymotors/Test-Pipe-cat-Race-exhaust-downpipe-cel-mil-ses-Fix-Kit_W0QQitemZ150165582748QQihZ005QQcategoryZ33557QQssPageNameZWDVWQQrdZ1QQcmdZViewItem)

HELP brand spark plug anti foulers pt#42002 FTW!!

and if it fails like engifineer said, than your wallet is only a few bucks lighter instead of the other higher pricey options

I used the spark plug anti fouler method and haven't see the CEL since. I installed the anto foulers the same day I put my DC header on.