You buy HELP! brand spark plug non-foulers (42002), and then with a 1/2" drill bit you drill out a 1/2" hole completely through one of them. After that you screw the 1/2" drilled out anti-fouler on top of the untouched anti-fouler, and put that set up in the 02 sensor on the S-pipe, then you screw on the 02 sensor on top of all that. You do this after you install your header. Thats what I did, after I installed my header, before even starting the car I did the anti-fouler trick. Didn't have to disconnect the battery, or mess with the fuse box, just did that simple little trick after the header install, turned on the car, and I've never seen a CEL, ever. You can pick up a 1/2" drill bit for 6 or 8 bucks at wal-mart, there are 2 types. Or spend 10 bucks at SEARS for the 1/2" bit, its up to you.

My votes for DC header.

 

MMW header man its da tightest. OR AW header is alright 2!!