anyone out there knows any good companies that built after-market cat that will also pass emission without ruining much of the engines power?

thanks

 

bump because my thread got flamed by no-knowlege losers

iwish i could find one with flanges:
http://cgi.ebay.com/ebaymotors...ZWDVW


Modified by dafuzzbudd at 10:18 PM 12/16/2006

 

Don't know where you live, but random technology and carsound make an obd2 california compliant high flow cat, which is what i just purchased. 220 with flanges already included, and it feels like i got some increase in hp over stock cat.

 

ebay had non flange carsound high flwo for $55-60
flanges = 70 if the place is trying to rob you

 

SMSP offers a number of different options for bolt-on high-flow cats.

 

cant find a link

 

http://www.sms-products.com

 

check the sig! We have high flow cats that will still pass the evil cali smog refs

 

i dont understand why everything is bolt on headers/ fake cats / cat backs
as soon as you want a REAL cat there's nothing bolt on

 

Like i said, look into a random technology or carsound. They both have a direct fit cat.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dafuzzbudd &raquo;</TD></TR><TR><TD CLASS="quote">i dont understand why everything is bolt on headers/ fake cats / cat backs
as soon as you want a REAL cat there's nothing bolt on</TD></TR></TABLE>

I already posted one of your best options above. You're making this more difficult than it really is. SMSP cats are completely bolt-on (open the box and install - even new bolts are included), and they flow very well. Others have posted additional bolt-on options.

 

the carsound looks good, but does that fit 2.5 piping?

 

carsound has various diameters to choose from

 

yup, you can get 2.25, 2.5 and even 3" if your heart desires.

 

contact tony1. I just got my hatch tuned and made 552 whp with a cat and thru the exhuast. It is possible to be emissions friendly and make power.

 

the main site http://www.car-sound.com/02pro...22636
has either 2" direct fit or various sizes of the universal

 

i dont think it would...
my cheapest option looks like a run to the shop with a $60 cat
or
http://cgi.ebay.com/ebaymotors...QrdZ1

but i wanted to spend less than $100



Modified by dafuzzbudd at 11:36 PM 12/21/2006

 

bump

 

someone give me an exact link i cant find anything

 

just contact smsp. he'll set you straight.

 

i am about to buy this http://cgi.ebay.com/ebaymotors...QrdZ1

will this bolt on to my replica dc 4-2-1 header and 2.5 cat back?
if circumference = pie * diameter
can i use circumference / pie = diameter to find header vs piping size?


Modified by dafuzzbudd at 12:48 AM 1/12/2007