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I have some preliminary mileage numbers in. I have the leanburn closedloop implemented.
25-27 mpg around town. I'm happy with that as I am a somewhat spirited driver, and reside in the mountains, and that is also what the stock D15B7 I had previously was getting in town. Leanburn closed loop made no effect on this mileage. I have a high idle problem (leaky power booster) and yesterday I turned down the TPS enrichment, so possibly I can knock off 27-29 mpg in the future, with no changes in driving habits.
40-41 mpg is my mixed FE, as my normal schedule has me running short errands with commutes to and from Morganton, Greenville/Spartanburg, and sometimes Knoxville.
Long distance FE: 47.9 mpg driving to Knoxville at 75-80 mph, return trip @ 70 mph, some in-city errands this morning before I topped off which I estimate dropped 1-1.5 mpg off the actual highway figures. FYI, wideband closed loop targeted 16:1 on the drive there, 16.7:1 on the drive back. I suspect the maps are too rich (tuned for stoich) as the logs were averaging 16.2:1; despite long term/short term trims the closed loop code isn't designed to fudge multiple AFR points so I suppose I'll lean it out in the part throttle area. I haven't played with part throttle timing, with how wacky the rest of the setup is I'm sure there are gains to be made.
I'd like to hit 50 mpg before I try to put a lip on the front bumper, or learn to drive like a normal person.
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