NoX Levels. With OBD II cars, this really doesnt matter. The OBD connector reads the computer to make sure everything is working perfectly. If the computer says everything is A OK, then you are good to go. (no CEL's). There are ways to pass this. Our Viper buddy has a Gen II Viper with 1,600 hp to the GROUND!!! Anyways, he is running an AEM but when it comes to emissions he plugs in another computer that tells the OBD connector from the bench (emission machine) that everything is perfect...when it actually isn't.:rock:I think this is an area thing. What I am really curious is what are the HC, CO, Nix levels with just the rear cats installed?
I have front and rear cats and I am willing to go have a sniffer test done to establish a baseline. Is there anyone that has rear cats only willing to do the same thing?
No, If your car comes with 4, it should have 4. If you remove 2 and CEL hasnt come on, good. You will still pass. If your CEL is on it is due to your O2's not seeing a difference in tempature between the 2 banks. That is when O2 sims come into play or when a good tune works out well.We have 4 cats. Dont you only need at least 1 or 2 cats and a tail pipe to pass?
We dont have emission laws here so I have no clue
Hate to say it but i think we will be swapping them out when emissions comes around for us!! Your a 2007 so ill be goin first ill let you know!! Its still a couple of years away though so no worries yet!! Have to find a crooked etester lol..
what mods can you do if all they do is hook a thing to the ecu and gas cap it?
wow.... so do headers and the ypipe throw a code?Well here in ontario Canada they switched to an odb test only. No sniffer in the tail pipe and no gas cap check. I passed with urd mk2 blower dtlt headers urd y pipe and magnaflow catback. Mind you they are supposed to a visual for cats and emissions related parts but most places don't care they just want the money from doing the test.
So with that said. As long as you have no check engine light or any pending codes (also need to be cel free for a while b4 you go) you can get away with almost anything lol
doug thorleys and the urd y-pipe would throw codes? I thought they hade the sims?Yes you'll get codes if you don't have an 02 Simulator or some sort of piggyback ECU that can trick the truck ECU into thinking your getting the proper readings for exhaust with cats.
wouldn't the sim be cheaper? if my tax return is enough I wanna do one of these. im a college student working part time... funds are tight lolThe headers will throw the code. You have to buy the 02 sim seperate. Or in my case my apr X1 takes care of it. Ucon from urd does the same