If you live in a state with strict emission laws, it's obvious that if you have a malfunctioning catalytic converter, you won't pass the smog test. If a CARB approved aftermarket catalytic converter cannot be identified on the CARB aftermarket catalytic converter website, or in the manufacturer's catalog; please call (888) 861-2646 for additional guidance. It doesnt matter what exit you throw on the car, if you add a y-pipe and some test pipes, it will work. Can you pass smog in California with aftermarket exhaust? Below are some frequently asked questions about California exhaust noise laws! If you want to modify or take out factors like O2 sensors, Exhaust Gas Temperature sensors, or diagnostic difficulty codes, you cant do it for a longer period of time. Section 4 is targeting California car owners and creating an issue to cite and punish law abiding citizens, including wasting law enforcement resources and time. In such a case, follow the maintenance tips and maintain the muffler delete the right way. Is Parking With 2 Wheels On The Pavement Illegal? As much as I hate this and want to tell you how to curtail this law, it is important to first understand how the law works and affects all of us living in the Golden State. If you pass the emission test, chances are you get a penalty for illegal car noise. California smog laws can still make your custom exhaust modifications illegal. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". The fine is accompanied by a mandatory trip to the California Buerau of Automotive Repair (BAR) to be inspected, after the repairs are made. The California Air Resource Board has tested the aftermarket heads and they will fail the smog inspection if they dont have an EO stamp on them. Several companies offer music that complies with the Executive Order. Disclaimer: Links on this page pointing to Amazon, eBay, and other sites may include affiliate code. var num = Math.round(junk * (a-1))+1; It is possible to get a heartier sound from your vehicle through specialty performance parts. If the noise is over 95 decibels, exhaust modifications are not allowed. Your vehicle does not need a smog inspection if your: Diesel-powered vehicle is a 1997 and older year model OR with a Gross Vehicle Weight of more than 14,000 pounds. Most factory-installed exhaust systems even on powerful sports cars dont exceed 75 decibels. Newer mufflers are far less constrictive, and the producer modifies the ECM to operate with the muffler. Unless your car is brand new, you might think that passing is up to fate. Replacing it with an aftermarket cat will not work, there are none that are carb certified. With latest California exhaust laws having mandatory fines it is best to stay within the law. http://arb.ca.gov/msprog/aftermkt/devices/eo/D-397-3.pdf, http://arb.ca.gov/msprog/aftermkt/devices/eo/D-397-2.pdf, http://www.dsmtuners.com/forums/norcal-dsm-forum/254459-carb-numbers-2.html, 2gNT 98 Eclipse RS Help, Hints, Solutions. The website states the petition is, To repeal section 4 of AB-1824. c280 mercedes same thing but only test for 96 and up with smog machine. The smog machine may not allow the inspection to continue and/or fail the smog inspection. But not all vehicles in California have to undergo a smog check. Taking a lot of short trips is the worst thing you can do for your air quality. All of it merges into one pipe where they get away from your car. The cost to replace your exhaust system depends on the type of car you drive and how old it is. //--> Removing the catalytic converter from your car will increase emissions, whereas uninstalling the muffler will have no effect. Help us keep this community going strong by participating regularly, sharing build updates, race reports, and discuss technical topics here instead of on social media. If you can keep your vehicles exhaust noise low enough you may be able to avoid attention from police. As an Amazon Associate I earn from qualifying purchases.Privacy Policy | Affiliate Disclosure. document.write(AffiliateBanner); . that would fall under California VC 27151. The California Air Resource Board has tested the aftermarket heads and they will fail the smog inspection if they dont have an EO stamp on them. Fines for illegal exhaust can be very high. Since motor vehicles are responsible for 80% of smog-forming pollutants in California, our Smog Check Program was designed to identify high polluting vehicles and require repairs so they can be brought into compliance with state emission standards. I dont think its a good idea to test the vehicle without it. Answer (1 of 7): The components involved in emissions control do not need to be removed or disconnected with a aftermarket exhaust, no. You can have a fine waved if you have a certificate of compliance. Now that everything is removed, you can install the new axle-back exhaust or cut-back exhaust system to replace what you took out. The older the vehicle is, the more likely it needs new smog equipment, which is expensive, and that can deter potential late 1970s muscle car buyers. The person can be fined if they do it again. Make no mistake about it, Californias new exhaust law (Assembly Bill Number: 1824) is a straight-up cash grab. If you bring your car to a tune, you can double the power gain. Any change, addition, or modification that alters the operation of any of these systems may be illegal and require a CAP exemption, or in some cases, a CAP waiver. We all know how that goes, license and registration please. This certificate must be presented in traffic court. It dissipates the noise using walls, perforated pipes, and multiple resonance chambers. Does a Catback exhaust include a downpipe? The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". All the noises produced by your engine and the rear of your vehicle can be heard if you dont have a catalyst and muffler. The cookie is used to store the user consent for the cookies in the category "Other.