smog test in Ca

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01-12-2004, 12:16 AM

#16

jhong567

Registered User

Join Date: Jun 2003

Posts: 105

what kind of high flow cat do you all recommend? I have a helix dp and perrin up. With the stock midpipe in, it bothers me.

01-23-2004, 11:39 AM

#17

GL_WRX

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Thread Starter

Join Date: Apr 2003

Location: arizona/sf bay area, ca

Posts: 40

Car Info: 03 wrx sedan blue 5spd

i just got a helix dp last weekend. with the stock uppipe still in, any chance it will pass smog? not that i mind to swap the stock dp in when smog is due couple years later, just wondering. and also i've seen on the net that some people installed the stromung 3rd cat eliminated pipe and put the stock 3rd cat heat shield over it to fake there's still a 3rd cat, will this trick work on helix dp?

01-23-2004, 02:40 PM

#18

RacerZ22

Guest

Posts: n/a

the answer: Keep the up-pipe and downpipe you replaced and when its time to get smoged change it back to stock! It dosnt take that long to through them on anyway.

01-23-2004, 05:16 PM

#19

sKOOTeR WRX

Registered User

Join Date: Aug 2003

Location: Thousand Oaks, CA, USA

Posts: 75

Car Info: WR Blue WRX

I do the same thing that racerz does or recommends with my truck and my wrx... I run them catless and when time comes for smog I change them out and everything is cool...