Inconsistent AFR's AEM X-series wideband

s300 and SManager software questions & answers
TheLawProject
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Re: Inconsistent AFR's AEM X-series wideband

Post by TheLawProject »

Ok, so I’ve been adjusting the fuel table extensively and have the low cam table while under low load (cruising/light acceleration) at a constant 14.8-15.0 AFR. Under WOT, it holds a 13.1 all the way up. . When I switch over to Closed loop Target Lambda the AFR,s swing from 14.4-15.2 on light load, and under WOT, it runs a little richer at 12.6-12.8. Is this normal? Do I need to change something in the Advanced Closed loop parameters?
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Hondata
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Re: Inconsistent AFR's AEM X-series wideband

Post by Hondata »

It depends on what settings you are using for target lambda and WOT compensation. If you enable the WOT compensation tables then it can enrichen under closed loop so in open loop you need to tune for 14.7. Post the calibration.
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TheLawProject
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Re: Inconsistent AFR's AEM X-series wideband

Post by TheLawProject »

Where exactly are these setting?

Also, I have been trying the closed loop (target voltage) and have had pretty good results. I set the target voltage at 3.24 which the chart that came with the gauge, says it should be 15.0:1. When I first start driving the car, the S.trim is +/- 5 for a few minutes, and the L.trim is around 4. After driving for a bit, the S.trim settles, and it cruises right at 15.0:1. During the WOT pull, it was a little leaner then my 13:1 target, so added just a bit of fuel, and now it seems to be good to go. Am I going about this right?
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Spunkster
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Re: Inconsistent AFR's AEM X-series wideband

Post by Spunkster »

If it is working for you then it sounds right.
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