you can still find janky smog shops that will "clean pipe" it for about $200. a small price to pay every two years to keep your vehicle how you want it. with that being said if you just fix the issue you shouldn't have an issue passing the test as long as you don't have a CEL. as mentioned above smog shops don't have 4wd dynos so they are just sniffing you at idle and at 2500 rpm no load. mine has passed legitimately no problem. if you are close but not passing the values you can always run it down to nearly empty and put some ethanol in the gas which will make it run like crap but lower the emissions. where there is will there is a way. i hope you like getting it up the butt from the good ole government because smog is just one of the lovely things us californians have to put up with.