I was going to order a carsound cat off of Ebay for my 91' DA, http://cgi.ebay.com/ebaymotors...QrdZ1, but I was wondering if I still could pass emissions with this cat in Washington state. My stock cat is going out and this seems to be alot cheaper alternative than a new OEM one and I might get 1 or 2 hp out of this one also.

So will this still be legal and able to pass an emissions test??


Also, I have a DC header going to a greddy SP2 exhaust, which diameter should I go with?? I was thinking of getting the 2" to 2.5" since I believe my header is around 2" at the collector and my SP2 is 2.5" I think. Would this be correct?

 

Usualy people can still pass with high flow cats, it all depends on the car and how bad the emissions are to begin with.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by four1one &raquo;</TD></TR><TR><TD CLASS="quote">Usualy people can still pass with high flow cats, it all depends on the car and how bad the emissions are to begin with.</TD></TR></TABLE>

he's right. depends on the car mine wouldn't. after i passed back to the test pipe on there you could run a yugo of my exhaust i love the smell of rich running JDM haha

 

my car passed with a catco high flow cat in illinois

 

as long as the cars throws no cel's your just fine

 

i had one on my crx and it passed the roller enhanched emissions with flying colors

 

thanks guys. still need to figure out which size though. considering my exhaust and header size I was thinking I should go with the 2.0" to 2.5" cat but I'm not sure. should I get that size cat or another size?? my exhaust is a SP2 and my header is a DC 4-2-1.

 

bump

 

high flow cat... test pipe...