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Originally Posted by STE92VE
Thanks for all your help. Maybe you can answer this question I just thought of....what would be the reason for limiting the SULEV engine to an auto tranny?
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well, again i seem to have fucked up. The new technical stuff that has come out along with the E9x series is making it quite confusing.
PZEV apparently has stainless steel tanks and lines, whereas SULEV is just the engine. So the N51 is a SULEV II engine.
Washington, Oregon, Connecticut, and Rhode Island have all adapted SULEV emissions guidelines, so therefore the N51 is now offered in these states along with previous SULEV states, California, New York, New Jersey, Massachusetts, and Maine
As far as why only AT can be set behind a SULEV engine, i don't know.