So i take my 97 civic lx into smog (d16y7) all stock. also i live in cali. anyways no cel codes. Thought it was running fine besides a little valve tick. didn't pass due to CO emissions being too high, max is .55 i believe, mines was 1.22. Took it to a mechanic to look at, he said my brrake booster had a vacuum leak and my valve tick. he also noticed at the 25mph mark for emissions dyno, that something is telling my car to dump more fuel into the system, hence my reason for high CO and running a little lean. Anyways i fixed the brake booster issue and adjusted my valves. decided to clean IM and when i pulled my injectors off to find out the they were shitty ebay ones and not only that but cylinder 1v injector was shorter than the rest, so i went and got oem honda injectors and threw those in but it still wont pass. so im at a loss right now, i was thinking maybe fuel pressure regulator was going bad, replaced my pcv valve, maf, iacv, tps. My fuel filter is a little old...idk how old. coolant temp sensor has been replaced fresh oil and coolant/hoses. please help