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12@Tygen1: I've been trying your (and Daox's) idea of controlling the throttle to keep the transmission below 2000 rpm. I've tried to watch the instantaneous MPG, but with the speed changing at the same time it is hard to tell if the method helps or not. I have been reading about BSFC, and it looks like it is generally better at higher RPMs, but I'm sure there are many other factors at play. I guess I'll just have to conduct some tests. BTW, I'm very impressed with your 48.2 mpg with a 2L/auto. I would be very happy if I could just get to 40 with my combined city/highway driving around Dallas.
11@TheMarkOfPolo: I calibrated the MPG and tank fill level on the Ultra-gauge last week. The DFCO is detected at about 45 MPH or greater on my Versa, so it is not much use except when there's an obvious red light ahead when exiting the highway.
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