I bought my car in June this year with an expired sticker on it, took it the next day fro an inspection and it passed without a problem(Mostly stock car) now, the only thing ive really changed is the exhaust----3" downpipe into a 3" test pipe and 2.5 hooker all the way back with mufflers. everything else is really stock, injectorr, fuel pump, injectors, intercooler, turbo, and it still has the functioning egr valve. will this still pass without a cat? onyl reason im wondering is i know most just switch out the test pipe for a cat, but my test pipe is welded on to my downpipe, and that would be a real PITA to get off jsut fro emissions. anyone ever pass with a stock car without a cat?????