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.

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?

. 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?

Yes, I'd like to know where to get them and how much too, also would be interested in an answer to Santo's performance question.

Here is one

http://www.car-sound.com/catalog/universal/940.aspx

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.

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...

Here is one

http://www.car-sound.com/catalog/universal/940.aspxThat one is 2" in, 2" out; restrictive.

Our cats will be ready to ship in about a week. All stainless.

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

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 (http://amos.shop.com/cc.amos?ccsyn=260&pcd=5744674&ccsid=358646059-13915&_ccn_test=1). 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.

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.

I have no idea. I highly doubt it since Walt just passes 2 weeks ago.
Where does Walt live?

Here in NJ. Don't worry our cats will handle the issues at hand.

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.

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?

How much power gain would I get if I dualed with 2.25" pipes all the way through?

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!!!

How much power gain would I get if I dualed with 2.25" pipes all the way through?

Not enough to make it worth it. This car needs the slightly larger size pipe diameter.

Not enough to make it worth it. This car needs the slightly larger size pipe diameter.
OK, Thanks.

Has anyone found any 2.5" two in two out cats?

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

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.

You mean Magnaflow? Megaflo is the name of our muffler series.

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


Moved to keep car!!! Love it!!!!