The cookie is used to store the user consent for the cookies in the category "Performance". The sole function of a muffler is to eliminate the excess noise when your engine is running. Do you need a muffler to pass smog in California? The sound level limit for vehicle exhausts in California is 95 decibels. We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. They verify using a sniffer and a computer, the two main methods. is coming from. Most late model upgrade components however will have the EO number stamped on the upgrade parts body. Immediate harm to your ears can be caused by loud noise. If the aftermarket exhaust has bungs for all the O2 sensors and a catalytic converter, then there is no reason at all it couldn't pass emissions. Jan 13, 2018. The Accessport still has the same functions it had before the change. I just bought an out of state 2005 Dodge 3500 5.9 and it looks like it has an aftermarket 5" turbo back exhaust and k&n cold air intake.This is my first diesel so I'm trying to figure out how to pass smog. can you pass smog with aftermarket exhaust in california?getting married in tanzania. California was the first state to pass a law regarding the regulation of such emissions, probably due to the coined name known as 'smog capital'. b[1].height = "469" A shakedown. This news certainly won't change that impression: starting today, July 19, California will use its mandatory biennial emissions testing to look for vehicles with modified ECU software, and fail . January 1 is when the camera-enforcement program will start. Why Do You Have To Be 17 To Watch A Rated R Movie? You will fail if you do anything like downpipes, midpipes, and the like. //--> The information contained in this website is for general information purposes only. AffiliateBanner += ' + b[num].alt + '; 2000 Dodge ram 2500 5spd, Airdog 150, 2wd with 378000 miles, 90hp injectors, and triple gauge pillar pod. this.border = '' I dont think its a good idea to test the vehicle without it.