exhaust question for v6 8g NY residents

[Snowy]

I have a 03 v6 8G, looking to install Ripp Long Headers and put on a Megan Racing M-OE Muffler. I have a couple questions pertaining to New York emissions and so forth. The headers won't pass CARB tests, and I know New York has OBDII so does this mean the headers won't let me pass New York emissions? Secondly, if I go with Megan or Magnaflow hi flow cats, do I need one or two and how many sensors does the v6 require now with the headers, does it remain just 2? Shouild I get hi flow sensors now also? I have tried searching most of this but the answers are mostly general and not pertaining to New York emission laws. I'm trying to do the headers and exhaust without throwing codes and failing inspections. Thanks for the help guys.

[oakrdrs187]

CARB is for cali.

You need as many cats as your car came with...

Im not in NY, but that's pretty much standard anywhere.

[Snowy]

That still doesn't tell me if the headers and setup will pass emissions and not give me any codes so I can pass inspections. Many states adopted CARB just wondering if NY has as well now or if I'm good still for it.

[oakrdrs187]

Originally Posted By: www.catalyticconverter.org

Clearing Up the Myth About High Flow Catalytic Converters
Is there really such a thing as a High Flow or Performance Catalytic Converter? Read the following story and you might be surprised!

There are many companies on the web today selling what they call a "high flow" or "performance" catalytic converter. We get calls almost everyday from customers wanting to know how much a "high flow" or "performance" catalytic converter will cost for their car. Well this may come a surprise to some and will really bust the bubble of what some companies are selling but, ....THERE IS NO SUCH THING AS A HIGH FLOW OR PERFORMANCE CATALYTIC CONVERTER!! A catalytic converter has no moving parts and is not chambered like a muffler, nor does it have elaborate packing like a muffler or is it's interior designed to move exhaust gasses along more quickly like with a spiral core.

A catalytic converter is designed to reduce harmful exhaust gasses...that's all! Basically all aftermarket cats have a ceramic substrate (the guts) that during manufacturing is coated with a solution of platinum, palladium and rhodium. This coating is what causes the catalyst reaction once the converter reaches a certain temperature supplied by the vehicles exhaust gasses. These substrates are made like a beehive honeycomb and are comprised of 400 cells per square inch across their surface. In theory, an aftermarket cat is higher flow than it's O.E. counterpart because the O.E. converter has a substrate made up of 700 cells per square inch, so the exhaust flow with and aftermarket converter is a little freer, but not dramatic! We do carry a few universal converter numbers that have a 200 cell substrate but they are like I said, universal. They sometimes require extensive welding and cutting of the original exhaust system, so for many applications they are just not practical.



Okay that's it!! There is no Magic "Super Free Flow" Catalytic Converter out there and any company that tries to sell you one is not quite telling you the truth, The sad thing is, there are some merchants claiming they have High Flow Performance Cats, and by the way at a huge inflated price, when in fact all you will be buying is the same converter you would buy anywhere else for half the price. So that's the story in a nutshell. But if you're still determined to find a High Flow catalytic converter or your buddy told you he got one from XXX Auto Parts, try to remember what you've read here and ask some real questions about the product. Like how many cells per inch are across the surface of the substrates or how many grams of precious metal wash coat is baked into the substrate? If it's below 25 say thank you and leave quickly. If the coating is less than a 25 gram mixture the cat will not do the job, and it will set off the check engine light. You might be surprised to find questions like these will throw most sales people for a loop. Most will have no clue what you are talking about, so just be careful. Okay, if you are now totally confused about the myth of High Flow, Go Flow, Mo Flow catalytic converters and would like to talk more about them...give us a call we'd be happy to hear from you.

http://www.catalyticconverter.org/news/news_page.cfm?Key=catalytic_converter-&News=89


You shouldn't have any codes as long as the Cats you use are direct fit to your car. Anything after the last oxygen sensor won't be picked up by the ecu.

As far as the headers go, they will free up some back pressure giving you a bit more performance, and the Megan Muffler will give you a deeper tone. As long as you're bolting parts on and those headers aren't the cat delete type you will be fine, otherwise start looking for crooked smog tech.

[QnzMostWanted]

as long as u have no codes, u wont have a problem passing ur car

[Snowy]

Thanks guys. I appreciate the help.

[Skyforger]

as long as u have no codes, u wont have a problem passing ur car

This.

Also, after getting the headers, a tune will eliminate the SES codes that may occur.