Quote:
Originally Posted by rmay635703
It runs out of fuel and saturates the catalyst over time (years) it can become brittle and fail
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That would be a problem. But Hondas such as the Gen1 Insight, Civic VX, and CIVIC HX have not had that problem & they run as lean as 22:1, according to Wikipedia. 18:1 is not nearly as lean and it would produce a modest improvement in emissions and in fuel economy. I don't understand why it was ever phased out, if it was phased out, for light load cruising and moderately low engine speeds. I gotta think it is still programmed into Honda iVEC systems but not promoted.