Quote:
Originally Posted by dank24
i-vtec would suck. That is what the ep3 has and it horrible gas mileage. vtec kicked in at 2,200 rpm on one cam. I got around 22-25mpg. freaking sucked ass.
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I'm sure the model you are reffering to has cam profiles designed more for performance than economy, at least on the "small" lobe. What I'm thinking of would be a lobe profile that would be smaller (less duration and lift) for the regular/economy profile than the lobes in the SOHC Fit motor now. The "bigger" lobe would have slightly more duration and lift than the current Fit lobe and be tuned to come on at 3,700rpm or so. So, you would get slightly better fuel efficiency at lower rpm/load
and more power at upper rpm/load. It seems like a win-win situation to me. Maybe I'm wrong.
By the way, the Yaris has variable lift (VVT-i) and still gets great gas mileage and achieves a ULEV-II rating.