Quote:
Originally Posted by some_other_dave
Funny, you say "negative" and then quote snippets of articles that say what I am saying. Lean burn produces higher NOx due to higher exhaust temps. The super-expensive catalysts can bring those numbers down to a level that was acceptable in 2000, but they cannot bring them down to levels that are currently acceptable at a price that is currently acceptable.
That's why no lean burn.
-soD
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Sadly the extremely expensive catalyst WATER that virtually eliminates NOX as per tests conducted from the 40's through one very recently that mech should remember has not been used so we are disallowed lean burn, despite the fact that a DI lean burn engine Grams per mile might still end up lower than at stoich due to the lower fuel consumption even without anything real fancy.
Ah well, gotta believe what the man says.
Also my insight being driven on a mix of speeding and around town is sitting at 84.9mpg, warm wether does help my beater despite the misfires and jerkyness. And no I don't exactly drive the insight in an ECO friendly way but it still returns very good numbers.