please get a exhaust temperature gauge
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In my humble opinion, operators of water cooled normally aspirated (non-turbo) engines don't need to worry about going too lean if they pay careful attention to listening for the sounds of detonation (especially at low rpms and high loads).
The knock sensor (if you have one) will help to make sure you aren't doing any damage. Otherwise, the lean burn Honda Civic VX guys would always be complaining about holes/cracks in their pistons and burned valves. Once you get really lean, power decreases, combustion temps decrease and chance of misfire increases. Below are a few graphics from our discussion a few years ago: https://www.gassavers.org/showthread.php?t=8719 https://www.fuelly.com/attachments/fo...a6755b2c38.jpg With changes in altitude, pilots of air cooled aircraft engines have a lot more need for mixture control than we do so it is of special concern to them: https://www.huygens.org/sape/pilotage...s/image012.gif https://www.huygens.org/sape/pilotage...s/image002.gif |
I subscribe to this thread:)
I have also noticed that when I go into lean burn mode my water temps actually drop. Good luck on your project.:thumbup: |
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Filled up again this morning and mileage was down some even with the increase in the setting on the EFIE, but there was a couple times I forgot to turn it on until I had already driven 3-5 miles, the morning temperatures have dropped off into the 30's the last 2 mornings and we had at least 1 rain day on this fill. This time the numbers were 237.9 miles on 6.246 gallons of gas for a MPG of 38.08. I guess I'm just going to have to play with this thing awhile and see what happens. This is still better than it's been getting most of the time for the last few months.
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