Unclemeaty

The stock Fuel Target map I feel has more than a few problems with it. First of all, the axis scale runs very high: up to 26.7. The scale is adjustable like most of the other maps, I felt leaving the scale alone for this one was just fine. In stock form, the ECU targets 14.7:1 AF at WOT until ~3600 rpm. I can see at cruising, but at WOT, 14.7:1 is a little lean likely for fuel economy purposes. I'm starting to fuel this down a bit richer and can actually tell my lower RPM pulls seem be strengthening below 4000 rpm. Also reflective of the fuel target map, the ignition timing map at WOT below 3500 RPM may be conservative for efficiency as well.

I'm sure Nissan did all this for emissions, fuel economy, and a less touchy throttle. In modifying the areas of fuel targets and consumption maps I can already tell improvement in high throttle operation below 4000 RPMs.