Barrman
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My M1009 consistently got 19-22 mpg all stock. I put 33x12.50 tires on and running the same gps road speed still got 19-22 mpg in all kinds of driving. It couldn't pull hills above 52 mph either.
I put in a new pump and haven't gotten better than 17 in the last 4 months running the same basic speeds. However, it attacks hills now and it is hard to keep it below 65 on the open road.
I have the timing 1 maybe 2 line widths to the drivers side of the mark on the block. I keep thinking about turning the timing back to straight up, but I love the power and less than a second start ups in all kinds of temps.
Pretty much if your truck is starting right up, idles smooth and consistently gets above 15 mpg. Enjoy and keep driving.
I put in a new pump and haven't gotten better than 17 in the last 4 months running the same basic speeds. However, it attacks hills now and it is hard to keep it below 65 on the open road.
I have the timing 1 maybe 2 line widths to the drivers side of the mark on the block. I keep thinking about turning the timing back to straight up, but I love the power and less than a second start ups in all kinds of temps.
Pretty much if your truck is starting right up, idles smooth and consistently gets above 15 mpg. Enjoy and keep driving.