Found a Dual Cat

GMAN

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I found this dual in dual out cat that I ordered last week. It should come in this week. I plan to use it when I do my dual exhaust convert. I've seen many different exhaust threads, read all of the debates of removing the third cat. Well what if the third cat was replaced. This would still make the car true dual and solve the emission problem that is evident to Mark owneres who live in states with more strengent emission rules like Texas.This the route that I am going. Pictures will be in next month.

dualcat.jpg
 
GMAN said:
I found this dual in dual out cat that I ordered last week. It should come in this week. I plan to use it when I do my dual exhaust convert. I've seen many different exhaust threads, read all of the debates of removing the third cat. Well what if the third cat was replaced. This would still make the car true dual and solve the emission problem that is evident to Mark owneres who live in states with more strengent emission rules like Texas.This the route that I am going. Pictures will be in next month.
What is the pipe diameter?
 
GMAN said:
. This would still make the car true dual and solve the emission problem that is evident to Mark owneres who live in states with more strengent emission rules like Texas.This the route that I am going. Pictures will be in next month.

TEXAS! damn, try jersey

oh, btw, shoot me a link of the site. i need to change my monte carlo to duel exhaust
 
Where did you find this... I live in Arizona right now where you can have headers with no pipes after... but i will be moving back to Cali and I'd like to have a "legal" car...

By the way... does a cat take away from the cars performance?
 
i guess thats fine for me for now, but when i get that 383 stroker crank...id need to find somthing else
 
Our cat back system passes NJ emissions with flying colors with only the PRIMARY cats.

I have not had a LMS cat back system fail emissions Nationwide.
 
ONEBADMK8 said:
Our cat back system passes NJ emissions with flying colors with only the PRIMARY cats.

I have not had a LMS cat back system fail emissions Nationwide.


I've got a quick question... what would you recomend when it comes to cali smog laws? I want real dual exhaust... but also have no problems with emmisions? I want that deep throaty sound...
 
ONEBADM8,

Do you guys have to pass NOx emissions? That is where my car fails after removing the third cat (NOx scrubber). This is only the second year that they have been testing for NOx here.

I had to put a timing adjuster on the car and dial it down to 0 degrees to pass.

Mike
 
MrWilson said:
TEXAS! damn, try jersey

oh, btw, shoot me a link of the site. i need to change my monte carlo to duel exhaust
That dual cat can be bought at JC Whitney. Texas has strict emissions laws. Every Mark owner I've met have had problems passing their emissions once they went to true dual exhaust eliminating the third cat. If there is any Mark owner on this forum who has passed, I would like to know their secret. And not a sympathetic tester. This could very well be the only the only solution.
 
Nightsky 93 VIII said:
ONEBADM8,

Do you guys have to pass NOx emissions? That is where my car fails after removing the third cat (NOx scrubber). This is only the second year that they have been testing for NOx here.

I had to put a timing adjuster on the car and dial it down to 0 degrees to pass.

Mike

I have no idea. I highly doubt it since Walt just passed 2 weeks ago.
 
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How much did you pay for that 2in-2out cat..... I got mine from babes muffler shop they did the whole duels all the back it was a high flow cat too for 189. I've have seen prices from 260 ,399 ..... and LM dealer stock LSC 2in-2out cat for $2000.
 
buddylee said:
How much did you pay for that 2in-2out cat..... I got mine from babes muffler shop they did the whole duels all the back it was a high flow cat too for 189. I've have seen prices from 260 ,399 ..... and LM dealer stock LSC 2in-2out cat for $2000.

They did that cat, all the piping and labor for $189.00?
 
ONEBADMK8 said:
Our cat back system passes NJ emissions with flying colors with only the PRIMARY cats.

I have not had a LMS cat back system fail emissions Nationwide.


I FEEL CONFIDENT I'LL GET MORE COMMENTS ON HOW NICE THE MUFFLERS ARE THAN CONCERNS ABOUT PASSING EMISSIONS.... LOL!!!
 
testad 6 time neaver passed so It was sell the car, or move so I moved to a city that does not have it. In IL anything south of chitown does not take it. hell ya
 
ONEBADMK8 said:
They did that cat, all the piping and labor for $189.00?

No thats cost for the cat.
the whole set up from prewarmer`cats back to new mufflers was about $560..... I hated the megaflow sound (too much drony nosie) came back they put turbos on it for no charge.
 

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