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how to read Autometer A/F gauge

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Old Sep 4, 2004 | 07:44 PM
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Default how to read Autometer A/F gauge

i dont wanna hear no bullshit.. alli wanna know is What the gauge shuld read, when im full throttle?

i have a vafc 2, so any MINOR changes would be helpful...

also, inorder to change my VTEC crossover point i have to compensate for air/fuel....... WHat should the gauge read when i change my vtec point???
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Old Sep 4, 2004 | 08:27 PM
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Kal's Avatar
Kal
 
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Default Re: how to read Autometer A/F gauge (DarkspeedVtec95)

that guage is too incorrect to base any changes in your fuel curve. Go on a dyno and tune it. Because they use a wideband o2 sensor.
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Old Sep 4, 2004 | 08:43 PM
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Default Re: how to read Autometer A/F gauge (DarkspeedVtec95)

if it's a narrow band o2 sensor it's not going to be that accurate. but for what it's worth, shoot for stoichiometric (sp)
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Old Sep 5, 2004 | 07:34 AM
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Default Re: how to read Autometer A/F gauge (flip1199)

tahnks thats waht i wanetd...

anyways, im hittin up the dyno in the spring jw. do i have to get a wideband o2 sensor for them to tune it with? or they supply one usually?

thanks guys
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Old Sep 5, 2004 | 07:43 AM
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Default Re: how to read Autometer A/F gauge (DarkspeedVtec95)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DarkspeedVtec95 &raquo;</TD></TR><TR><TD CLASS="quote">tahnks thats waht i wanetd...

anyways, im hittin up the dyno in the spring jw. do i have to get a wideband o2 sensor for them to tune it with? or they supply one usually?

thanks guys</TD></TR></TABLE>

they supply, but for now id aim for just into rich...its too inaccurate, and the difference between slightly rich and stoich is prob. like 2 hp, while the difference between stoich and lean is about $2500 in a new engine.

also i know all engines are different but id shoot for around 4700-4800 vtec crossover and richen up there because it will still be on the low cam maps.
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Old Sep 5, 2004 | 07:53 AM
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Default Re: how to read Autometer A/F gauge (fastludeh22)

well when i go into vtec it just rises to RICH and bounces around the rich area....


i knwo its not to accurate but it was 30 bones, and some cool little light shows

call me aricer
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Old Sep 5, 2004 | 08:32 AM
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Default Re: how to read Autometer A/F gauge (fastludeh22)

I thought that after 80% throttle your ecu used the current map configurations and because of that you would read rich no matter how much you played with it????

Mostly because the use the o2 sensor after the 80% so the signal just goes rich???

Am I wrong? But having said that if I am right you would be tuning it for nothing because you dont even know what you are doing.
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Old Sep 5, 2004 | 08:50 AM
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Default Re: how to read Autometer A/F gauge (95 lude)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 95 lude &raquo;</TD></TR><TR><TD CLASS="quote">I thought that after 80% throttle your ecu used the current map configurations and because of that you would read rich no matter how much you played with it????

Mostly because the use the o2 sensor after the 80% so the signal just goes rich???

Am I wrong? But having said that if I am right you would be tuning it for nothing because you dont even know what you are doing.</TD></TR></TABLE>

after 80 % it goes into open loop i think, which means no matter what your o2 says, it goes by the ecu maps, or in this case v-afc altered ones


Modified by fastludeh22 at 1:17 PM 9/5/2004
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