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i dunno about washington but i'm an inspector in PA... In PA your only allowed one thing to be not ready and cannot have any check engine light codes... but since my car has downpipes and jb4, i kept my autoclear on and when u have your autoclear on, everything that says ready or not ready becomes unsupported which means it doesn't exist... and obviously no codes so thats how i passed emissions in PA.... also we do not do the tailpipe test for obd2 cars.
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