I'd move that O2 sensor to the bung that reads all cylinders...Your basing your air/fuel off one cylinder which can lead running lean or running way too rich. As for the rattling exhaust, it happens, mine rattles too. Aftermarket exhausts usually don't fit like OEM causing rattles and such. Looking good though :TU:At the beginning you can hear how loud the rattle is:
http://vids.myspace.com/index.cfm?fuseaction=vids.individual&videoid=1815164413 ohh yeah, put this header on the other night also.
anyone know what brand it is?