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Lean on idle, rich on cruising

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Old Jan 27, 2008 | 02:05 AM
  #1  
R-R-Rx7's Avatar
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Lean on idle, rich on cruising

hey guys

i was just checking my emissions and they seem to be kinda high
on idle the car goes lean and goes rich while cruising
i got the high flow cat, air pump installed

the guy who checked my emissions said that probably is some sort of a sensor but since hes not a rotary expert he doesnt know

i changed my o2 sensor in august 2006 and only coverred 7000kms since then

where else should i be looking?



Thank you

Con
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Old Jan 27, 2008 | 02:13 AM
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Derwin
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What are your AFR's?
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Old Jan 27, 2008 | 02:48 AM
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as i saw in the machine which u have to use a formula to get the AFR (i dont know it) on idle it was 0.89 and on 3k revs 1.15 approx ..or the vise versa...
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Old Jan 27, 2008 | 11:55 AM
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Derwin
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That's not AFR that is emissions.

Emissions I wouldn't worry about as long as it is legal to drive it around and if you follow advice for mods.
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Old Jan 27, 2008 | 12:19 PM
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even though is not accurate but just to get an idea..i got the apexi turbo timer which reads my AFR and varies between 16-20
i know its cheap **** and no accurate..
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Old Jan 27, 2008 | 01:56 PM
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the apexi turbo timer does not show accurate AFR's I know I have one and its way off.
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