Quote:
Originally Posted by cycleboy
I'm still getting ~31mpg after 14K miles.
A lot of that has to do with my typical drive:
1 mile of 35mph city streets, 33 miles of 65-75mph open highway, 1 mile of 45mph city streets. In the afternoon, do it in reverse. Do this 5X per week.
But, it also has to do with how I drive. I usually shift it in the 4-5K range, except the occasional times having fun when I take it up to 6K+. Once I'm at cruising speed, I tend to put it in a gear that keeps the revs in the mid 3's (so 5th gear for ~45mph, 6th gear for 75mph). This is sort of like overdrive on an auto. Your revs drop and you have no acceleration, but better mileage and quieter. If I need to accelerate, downshift!
I think if I was DD'ing it like I am but always shifting north of 6K and leaving it in gears where it is high in the rev range (and powerband), I'd probably have some sucky mileage.
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Can you clear something up for me , will this car adjust fuel more efficiently if I shift gear in the order of 4-5K range like you said? versus shifting in the 2-3k range? . I know the D4S has 1 injector and a port injector how do those 2 work in symmetry. If I would come up to know the rpm's where the injectors are working more efficiently would be a huge step forward. If anyone does know