bmwman91
04-23-2007, 05:18 PM
What is the leanest you can safely run these motors under a steady highway-load? According to datalogs, I seem to maintain between 25% and 35% throttle opening between 55 & 75mph cruising. The AFR seems to center around 14.1 or so, which is damn rich IMO.
I would think you could run at LEAST 15:1 under such low loading. I thought someone on here said 17:1. Anyone have experience on this? Thanks a bunch! I have yet another wacky idea in the works right now that can hopefully net ~17% better mileage on the highway & certain around--town conditions (with a Wide-band O2 sensor anyway).
I would think you could run at LEAST 15:1 under such low loading. I thought someone on here said 17:1. Anyone have experience on this? Thanks a bunch! I have yet another wacky idea in the works right now that can hopefully net ~17% better mileage on the highway & certain around--town conditions (with a Wide-band O2 sensor anyway).