Interesting comment about rpm and air flow. Many gen 2 insight owners find you can be fairly agressive up to 2500 rpms and still get pretty high mpg vs accelerating like a little old lady at 1500. Ive wondered about that.
Any idea how delaying closing of the intake valve to reduce pumping losses would effect this?
One of the main differences I notice with higher octane fuel is I can accelerate briskly at 4700 rpms on 93 vs 5600 on 87. Turning 900 rpms slower should account for some savings if you must make those type of moves for 10 seconds several times a tank for merging into traffic.
