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AEM uego and MS, different readings

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Old Jul 14, 2009 | 05:57 PM
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Default AEM uego and MS, different readings

https://www.miataturbo.net/forum/t28005/

Went here followed all insructions yet no matter what I change the values to, under lambda sensor. (even as high as 21) it still doesn't get closer to the same) It's about 2 afr apart
The AEM will read 13 at idle where as the MS shows 15..
What should I try?
Old Jul 14, 2009 | 07:38 PM
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What is the directory of the file you are editing?
Old Jul 14, 2009 | 07:40 PM
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I still haven't gotten my afr's to match all the way. They match perfectly at idle and cruise but in boost MS reads 2 full points leaner.

I'm getting an LC1.
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Old Jul 14, 2009 | 07:57 PM
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I've tried my luck with the lc-1 and man it's a pita IMHO I suck So it might be the better route.. Anyway on to the other deal.\Program Files\MegaSquirt\MegaTune2.25\mtCfg\ then the msns-extra.ini
now when my car is off it slowly starts at 13 and works its way to 17 then the -- I haven't tried disconnecting it from the MS to see what it does so maybe thats my best bet to finding something
Old Jul 14, 2009 | 08:09 PM
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they all do the whole "13 to 17' when the car is turned off. Is it hooked up via serial or analogue port?
Old Jul 14, 2009 | 08:20 PM
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Thats good to know
Old Jul 14, 2009 | 08:20 PM
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serial for sure white wire to existing o2 wire correct?
Old Jul 14, 2009 | 08:21 PM
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I mean analogue sorry
Old Jul 14, 2009 | 08:23 PM
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Sorry for the multiple posts my edit button seems to crash my internet don't know why but it does anyway, Which AFR reading is going to be the correct one should I worry just about how the guage is reading or the MS I know if they were the same it would be ideal.
Old Jul 14, 2009 | 08:50 PM
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Pretty sure the one the gauge is showing is the more "correct" one.
Old Jul 14, 2009 | 09:11 PM
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ok Soo should I be worring about the noise so to speak... aka the difference? or should i tune based on the gauges afr?
Old Jul 14, 2009 | 09:39 PM
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Definitely tune according to the AEM gauge. It matched the Dyno afr's perfectly.
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Old Jul 14, 2009 | 10:04 PM
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Originally Posted by p51hellfire
ok Soo should I be worring about the noise so to speak... aka the difference? or should i tune based on the gauges afr?
Do you have autotune? If you do then you need for the readings to be consistent so your car will tune itself correctly. If not then definitely tune according to the gauge.
Old Jul 15, 2009 | 12:29 AM
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I can't offer advice save to clear your cache/cookies.
Old Jul 15, 2009 | 02:04 AM
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phail yes
nguyen no
Old Jul 15, 2009 | 03:56 AM
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fail and what now?
Old Jul 16, 2009 | 01:25 AM
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so any one else Joe? I know your the master Help me out here.
Old Jul 20, 2009 | 03:48 AM
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So it decided to match up on its own don't know why so problem solved! Thanks for the help guyz
Old Jul 20, 2009 | 03:59 AM
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Good ****
Nothing beats just letting the damn thing figure itself out lol
Old Jul 20, 2009 | 04:30 AM
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Ftw^



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