Two things I read that its not a good idea to clean out your stock catalytic converter also on dx civics the cat is on the header so when putting on a new header were does the cat go like if i put a new header and cat and exhaust will it all fit or what.

 

Yes, as long as the exhaust system you purchase is made for your car. Basically what will happen, is you will take the current header/cat setup out as one piece. Then when you put the new header on, it will the just the header, then you go underneath and attach the cat to the header, then the cat-back to the cat...

 

yeah thats about it. everything will line up perfectly if you get the right parts.

 

If you buy one of those cheap ones of eBay it will be only a header and you will not have a cat anymore. Just an FYI cause I dont know if thats what you want or not

 

Thanks people thats was perfect and yes i have to have a cat cant run with out one here in Va.

 

oh you can..you just cant get caught

 

How about cleaning your stock cat out I read that it wasn't a good idea.[:@]

 

very bad idea. read why. a little tech article for you.