[windmill]

Is it not so that lean burn ratio is about 22 to 1 ? So 10.8 to 1 is normal " burn" .
In Europe we do only have the 5 spd ---->lean burn. In the Uk I think it is the same.
So actually the CVT is a non-vtec-e, because leanburn (5spd) requires a vtec-e. This must be difference is it ?

 

[windmill]

Yes hawkGT647, I mixed it up ! Now I understand, sorry.
I didn't know that air to fuel ratio will vary from 14.7:1 all the way to 25:1.
I tought it was a fixed ratio. And yes lean burners are more poluting.
The only question that will remain is why does Honda made the CVT's non lean burn ? Both engines output performance are almost the same, even the high Californian emission standards are ok for the lean-burners so why Honda didn't ?. Is the CVT so much more "work" for the Insight's little engine ?
Mmmm I am gonna take a look in the maintenance manual or I can Find something difference in the engine's head.

 

[windmill]

The CVT is probably made as a SULEV car because there is a goal at Honda to have low emissions. It's not all about fuel economy...

That's true.