I still think you are missing the point. You need to be more pro active on your changes, and let us know. We have been giving suggestions, but I fail to get reply and reports on those changes you are making. You will see a difference in your economy if you followed our leads. The bad gas so to speak would not affect your mileage so much as weaker combustion and pinging potential. The autotune will take care of most of that, as long as you are running a premium grade fuel of 91-93 octane. That octane maintains the burn.
Rhino, I thought I would start first by leaning it out on at freeway and cruising speeds, so here is where I made my changes.
My Zippers base was 13.19 to 1. I started in the AFR vs TPS at 1792 rpms. At 14.8 degrees of throttle, I raised the box up two positions. I did that until the third box over was peaked at 13.831 to 1 afr, then I tapered the curve back down until the third box over, (throttle position 31.467 degrees) from the peak was back level at 13.19 to 1. I did the exact same type of curve at 2048rpms, except this time the two middle boxes were peaked at 14.005 to 1. I did the same thing at 2304 rpms, starting with raising the box at 14.8 degrees throttle, raising the line until the two center boxes were at 14.005, and dropping the curve untill the throttle position box at 31.467 degrees was at 13.91 to 1 afr. I did this through each consecutive AFR vs TPS stopping at 3840 rpms. In that last one, I started raising the box at 31.467 throttle, to 13.253 to 1 afr, peaked it at 14.005 to 1 afr, and dropped it back down until the 51.492 throttle position was back at the 13.021 to 1 afr. I'm thinking this may be leaning out the freeway and cruising ranges. I may be wall off, and probably am, but that is what I have done so far.
Now I'm thinking I need to lean out the off idle and low end stuff too, but dn't know where to start.
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Topic: Best AFR? (Read 30107 times)