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Forum namePerformance/Engine
Topic subjectI need a new Catalytic Converter...Suggestions?
Topic URLhttps://forums.2gnt.com/dcboard.php?az=show_topic&forum=i5&topic_id=100728
100728, I need a new Catalytic Converter...Suggestions?
Posted by SonicYan, Aug-30-06 07:36 AM
Failed smog. Details here:

http://forums.2gnt.com/dcboard.php?az=show_topic&forum=4&topic_id=86880&mesg_id=86880&page=

Looks like I need a new cat. Suggestions? OEM Cat? High flow one? Where to get it? How much? I've searched the forums, most I see people getting are the catco ones.

And will the High flow Cat from RRE work with my Greddy Evo 2.5 exhaust?

http://www.roadraceengineering.com/eclexhaust.htm

They have one for $150. It says 2G FWD. Not sure if they meant all 2G FWDs or just GSTs. If this would work, I'd prefer this setup, as they're pretty close by and I can pick it up.

Would really appreciate any information. Thanks.
100739, RE: I need a new Catalytic Converter...Suggestions?
Posted by boosted60trimrst, Aug-30-06 02:10 PM
a dont think a hi flow cat will pass smog but im not positive .
100759, RE: I need a new Catalytic Converter...Suggestions?
Posted by Keith2172, Aug-31-06 01:58 PM
EDIT: Nevermind, I thought you were turbo till I looked at your first post. I'd just get the cheapest thing that will fit and swap back afterwards, a hi-flow won't pass visual on our cars anyways, and probably won't do a lot more than your current old cat.
100762, RE: I need a new Catalytic Converter...Suggestions?
Posted by Chamuko, Aug-31-06 07:20 PM
his is the black car we saw at MOD.

just go for a basic one man. I know a shop that charged 35 for my bros 97 fire bird.
100764, RE: I need a new Catalytic Converter...Suggestions?
Posted by SonicYan, Aug-31-06 07:59 PM
I see. I guess its time to go look around for a generic one in the area then. OEM Mitsu one is too much, $300+ from Norco Mitsu...
100765, RE: I need a new Catalytic Converter...Suggestions?
Posted by DanKid, Sep-01-06 03:41 AM
Autozone sells a universal one for the eclipse for $50 but it doesn't have the flanges to bolt it right up. You could always have a shop weld on some flanges that way you could remove the cat whenever you want.
100879, RE: I need a new Catalytic Converter...Suggestions?
Posted by 95greenhrcgs, Sep-08-06 08:21 PM
I have a stock replacement one that has about 1,000 miles on it. Since my car is totalled, I dont need it. It is already off the car.

PM me if you are interested.
100880, RE: I need a new Catalytic Converter...Suggestions?
Posted by 99silvergs, Sep-09-06 05:10 AM
CHeck out magnaflow .. they have a direct fit
http://www.car-sound.com/02product/shopdisplayproducts.asp?portal=49State&make=Mitsubishi&id=550&cat=Eclipse

import tuner just did a test on it too for this months issue.
100890, RE: I need a new Catalytic Converter...Suggestions?
Posted by eclipsekaiser, Sep-10-06 01:29 AM
Oh no...not another one. Mikey, Juan is still using mine, otherwise you know I got you.
100923, RE: I need a new Catalytic Converter...Suggestions?
Posted by thedawg, Sep-12-06 12:18 PM
For the guys who said the high-flow cat won't pass smog, that is simply incorrect.

The cat you buy should have a CARB number on it, but it isn't required. I have passed CA test-only smog 5 times with 2 different high-flow 2.5" cats, without any issues functional, visual, or otherwise.

Yes, a 2.5" RRE cat would be a perfect fit for your Greddy catback, but you have to weld the flanges on. There is no such thing as a GS-T compatible drop-in cat that fits a RS/GS.
100933, RE: I need a new Catalytic Converter...Suggestions?
Posted by dalesmitsu, Sep-12-06 06:39 PM
Originally posted by 99silvergs
CHeck out magnaflow .. they have a direct fit http://www.car-sound.com/02product/shopdisplayproducts.asp?portal=49State&make=Mitsubishi&id=550&cat=Eclipse import tuner just did a test on it too for this months issue.

I second about Magnaflow cat's, I cough,cough have that issue also.

I'm putting one on mine when it comes to doing from headers to back whole system. I'm planning everything out first, for my Dsm. :thumbsup

100951, RE: I need a new Catalytic Converter...Suggestions?
Posted by fly1, Sep-13-06 05:04 PM
I just bought a universal, 3" Magnaflow from Jeg's and it's carb legal. :)
101206, RE: I need a new Catalytic Converter...Suggestions?
Posted by SonicYan, Oct-02-06 02:58 PM
Originally posted by thedawg
For the guys who said the high-flow cat won't pass smog, that is simply incorrect. The cat you buy should have a CARB number on it, but it isn't required. I have passed CA test-only smog 5 times with 2 different high-flow 2.5" cats, without any issues functional, visual, or otherwise. Yes, a 2.5" RRE cat would be a perfect fit for your Greddy catback, but you have to weld the flanges on. There is no such thing as a GS-T compatible drop-in cat that fits a RS/GS.


Ah, thanks for the info Dan. Hehe, I read my post just now after I didn't see any replies for a few days. I emailed Mike W as well, pretty much said the same thing you said, get a raw 2.5 cat for $99.