AF reading

FlashPro questions & answers specific to the 2006-2011 Americas Civic Si
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aka_si
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Joined: Fri Jun 26, 2009 2:11 pm

AF reading

Post by aka_si » Fri Jun 26, 2009 2:25 pm

Questions, you guys have mention that the AF ratio reads about a whole point lower from the actuall AF ratio.
Is this just during datalog or real time too?
Is this caused by the protocol of the FP and ECU or is it the O2 sensor itself that Honda put on.
Also, would a AEM UEGO wideband read rich as well?
Would it work with the FP, as in taking the AF readings from the AEM UEGO instead of from the car's ECU?

ImAuthenticFTW
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Post by ImAuthenticFTW » Fri Jun 26, 2009 4:53 pm

This is because of the "wideband" honda put in from the factory, as EGT's climb it becomes less and less accurate. this is during datalogging and real time as well. Also idk if the AEM Wideband can function with the FlashPro Manager. I know KPro had the option to implement an aftermarket wideband but idk if flashpro can just yet or if it ever will

aka_si
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Post by aka_si » Fri Jun 26, 2009 6:54 pm

Has anyone (Hondata) tested a different kind of wideband to get a better reading?

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Hondata
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Post by Hondata » Sun Jun 28, 2009 11:24 am

It appear that the factory o2 reads correctly from 13:1 to 14:1, and is about 0.3 points rich at 15:1. and 0.5 points rich at 12:1. However, the differences change with EGT.
Hondata

aka_si
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Post by aka_si » Mon Jun 29, 2009 8:58 am

So at WOT and a high EGT, the ranges from 13-14 are accurate? and inaccurate from at >14.1 and <12?.
I ask this because I am hesitant to do any street tune, but if you're saying that the 13-14 range is correct, I'll start my street tune tonight.

aka_si
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Post by aka_si » Fri Jul 03, 2009 2:10 pm

FYI
FP's AF is dead on with UEGO's AF.

soxfan143
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Post by soxfan143 » Mon Jul 06, 2009 6:12 pm

aka_si wrote:FYI
FP's AF is dead on with UEGO's AF.
Yea. Mine is pretty close too and I'm turbo.

Garrett_si
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Post by Garrett_si » Mon Jul 06, 2009 6:57 pm

soxfan143 wrote:
aka_si wrote:FYI
FP's AF is dead on with UEGO's AF.
Yea. Mine is pretty close too and I'm turbo.
I compared the Honda AFR to my Dynometer wideband (Innovate) and like Spunkster tell about, the AF is good from 12-14:1

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