I am using the old foot cruize. But as you can see by using the scangauge is your mpg goes up and up as you get use to holding a constant gas useage, i set my gauge to mpg and try to maintain 50 mpg. as you can see from my fuel log it is working great. I notice that you can be driving say 55 mph and getting 45 mpg, with just a minute backing off of the throtle, the mpg's go up to 50, but speed stays the same. its like free mpg's. but if i was doing a mpg cruize control or a constant throttle. i wouldnt get the same results.
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