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 29 2012, 12:02 PM
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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 |
You should do your own safe testing, because I haven't.
Here's what I see in the factory manuals... Which I read to be: +0° vac. adv. at 100 mmHg (33.8 kPa) and below +11-14° vac. adv. at 200 mmHg (67.7 kPa) and above What's your idling kPa? I'm not proposing that adding 14° of vac. adv. is a good idea. Just suggesting that, based on my interpretation, the stock dist. adds that much. I wouldn't go over you max. adv. (28°), but bringing your 100kPa @ 1200rpm bin up to quite a bit and then linearly degrading with dropping kPa. Something like the following, might be helpful. I distributed 14° between 45kPa and 100kPa, without going over 28° at any point. 8-22-26-28-28-28 8-20-24-27-28-28 8-18-22-25-28-28 8-16-20-23-26-28 8-14-18-21-24-28 8-12-16-19-22-26.5 8-10-14-17-20-24.5 8-8-12-15-18-22.5 And again, the above suggestion is based on speculation, not experience. Try it at your own risk and always listen for sounds of pinging or other problems. And only add as much advance as makes power. Watch your CHT & EGT. |
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