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Very interesting read on the SAHM Atkinson mode.
Quick stats for when I'm in the high mpg mode:
RPM around 1550-1650 depending for uphill vs down hill etc
LOD 42-46, at about 47 it kicks out of the mode
IGN 24, today I saw it dip to 23 with a lower load (around 35) down a hill
Speed 40-50mph (target of mine is 43-45)
MPG 50-55, mainly around 52-53 on normal flat ground
Now when I'm not in the mode my specs are
RPM around 1550-1650 (same as above, it is in lockup lol)
LOD 50-54
IGN 36-39, spikes to 40 here and there
Speed 40-50mph (target of mine is 43-45)
MPG 40-44
It is very hard to keep it in this mode, 2 days ago I drove home a large % of my trip home in the mode, somewhere around 60-70%. I didn't even know how I stayed in the mode, just knew to keep the foot lightly on the gas. I think there was a small wind pushing me since this is out of the norm. I hope further aero mods will keep me in this mode. On the way home at around 50-55mph I could get it in the mode and at 46 LOD (still slowing down though) it read around 48-51mpg, much better than 37-40...
The only really weird thing is... SAHM mode appears to be based on high ign advanced which my car does very easy when warm. It is when the ign is not advanced as much when I get the better MPG. I really wonder if I ran better gas if it would get better MPG due to the very high ign advanced? I think my next fillup will either be mid grade or prem to test. $3.69 for reg, $389 for prem, 20% better mpg would be a ~$0.54 savings per gal!
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