How does this target AFR table look?, VE table results after autotune |
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How does this target AFR table look?, VE table results after autotune |
rwilner |
Mar 28 2012, 08:36 AM
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#1
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No Ghosts in the Machine Group: Members Posts: 953 Joined: 30-March 10 From: Boston, MA Member No.: 11,530 Region Association: North East States |
I'm going to use the autotune feature of Microsquirt to set my fuel map (VE table). This system will automatically adjust the VE to achieve the mixture as defined by the target AFR table.
This is a 12x12 table. The Y axis is MAP reading (load), and the X axis is RPM. This table was auto-generated by this microsquirt calculator. What do you guys think? Is this a solid target AFR table or are adjustments needed? |
McMark |
Mar 28 2012, 11:09 AM
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#2
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
(IMG:style_emoticons/default/agree.gif) You're probably going to want something around the 12.5-13 in a lot of those bins. Gaining fuel economy can come from keeping your foot out of it and tuning the cruize mixture a little leaner. But I would play with that after the fact. Get it running strong and cool first.
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Mark Henry |
Mar 28 2012, 12:19 PM
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#3
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
You're probably going to want something around the 12.5-13 in a lot of those bins. Gaining fuel economy can come from keeping your foot out of it and tuning the cruize mixture a little leaner. But I would play with that after the fact. Get it running strong and cool first. This is a good plan, the deceleration values can be left alone because in reality the number is meaningless. Most likely you have to enter a value just to keep the program happy, you will find your O2 meter will lean out off the chart. This is normal on deceleration since there is no load and you cut the fuel. You will not hurt anything (except MPG) by running a little rich. Run lean and you can fuch things up PDQ. As to timing I have programmable crankfire and I also played with this extensively. Important yes, but it's not rocket science. As to all the articles linked they apply to watercooled engines not so much to aircooled. As 904svo stated the aircooled engines use the fuel charge to help cool the engine. This one of the main reasons aircooled engines couldn't meet later emission standards. I've learned by doing, BTDT. |
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