imported_03jeffrey

Hey guys i need some help! I want to install DC 4-2-1 Headers in my 2000 Honda Civic SiR (B16A2)I Currently have a exhauste muffler and i cut off my resantor and put straight pipe, other than that the pipe is stock. I was told that my stock pipe is 2&1/4 Inch outside diameter and 2 inch inside diameter. i been online to check the headers out and i notice that some headers say 2inch,2&1/4,2&1/2,2&3/4inch and they all say for B16's..now my question is, is my collector size from the header to the cat a different size or is it in fact 2inches. I really need to know cause i dont want to purchase the wrong size.

Thanks

imported_mikepasini

normally stuff off ebay comes to your door being the wrong size...



jks... well, if you are looking on ebay... don't... use the for sale thread here... it should be 2 1/4" for the collector on your stock exhaust header...