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when you take your foot off the throttle, yes, it is completely normal.
I don't have excel, but when your above 1200 rpms and your tps is at about 10% (aka idle) the computer actually turns off the fuel injectors, so you are combusting nothing at all. Thats that really drony sound I get since I have no cat or muffler. My wideband shoots to 20:1 and the car slowly decellerates. This is because your engine is using your cars momentum to keep the engine running, rather than wasting fuel. When this happens, it really doesn't matter when the spark goes off, so it does it really early because (this following part is solely speculation) it is easier to spark when the piston is lower because the air isn't compressed as much, so the amount of energy required to arch the distance between the electrode and the ground isn't as high.
just log a 3rd gear pull from 2500 to redline for tuning your wide open throttle trims
also make sure you have mmcd version 1.8g, if you don't, pm me. You don't need to log o2-f, cool, vspd, and anything after mafs. (acle, flg0, flg2, map, oilp, egt, oilt, fuel, wbo2, plen, and pump, as none of those will work, because you most likely don't have the sensors for them, or the kit that allows you to log them)
the more things you log, the less responsive your logs are, because what your logger does is it asks the ecu for each value one by one, and once its done with the list, it goes back to the first one, so the more you log, the less often it asks the ecu what your rpm is, for example. With dsmlink, it actually monitors, so log all you want, but with mmcd, limit it to what you need.
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