8th Generation Honda Civic Forum - View Single Post - tired of waiting for car/ time to buy some bolt ons ?????

**webby** · 01-28-2006, 01:42 AM

some headers are able to pass emissions. These will not. A lot of headers remove the stock cat. Some let you still use a cat etc. Race header usually will not allow a cat, and then you obviously can't pass emissions.

01-28-2006, 01:42 AM	#5 (permalink)
webby Acorns! Join Date: May 2005 Location: Storage Room B Posts: 15,009 iTrader: 12 / 100%	some headers are able to pass emissions. These will not. A lot of headers remove the stock cat. Some let you still use a cat etc. Race header usually will not allow a cat, and then you obviously can't pass emissions.