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Old 07-17-2006, 04:45 PM   #1
scoobdude
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Member#: 50699
Join Date: Dec 2003
Chapter/Region: TXIC
Location: austin
Vehicle:
2004 WRX
Platinum Silver

Default StreetTuner and idle (wrx specific)

Is anyone else having issues with weird idle a/f ratios?

Right now i am getting 13.9 a/f ratios after driving. While i know its normal for it to hit this a/f, it will stay there for about 10-20 seconds. It also sems to plague tip in to steady throttle and rpms. (ie it will run around 13.9 for about 10 seconds then go up to 14.7).

I have tried changing my ol/cl, idle values, even running the entirely untouched stage 2 map off cobb's websight.

I have checked for leaks and cleaned the maf sensor. I will be uninstalling ST tonight to see if that makes a difference. Reason for this is cause i think it is more af an electric issue than mechanical (such as exhaust leak or vacum leak)

Is anyone else having this issue?

I also have plenty of logs if needed.
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Old 07-18-2006, 09:26 AM   #2
scoobdude
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nm, It seems to have been aused by the mchanical rear O2 sensor fix.
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Old 07-18-2006, 02:48 PM   #3
Crystal_Imprezav
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CGM

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Yup same thing happens when you unplug your rear o2, use the fix, or leave the sensor zip tied to something while you use the hole for a wideband. Apparently it only start after the release of the newer map versions.
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Old 07-18-2006, 04:00 PM   #4
scoobdude
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Platinum Silver

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So it did not do it on the old 1.19 maps or anything?
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Old 07-18-2006, 05:39 PM   #5
hondaeater69
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i don't see this problem and my rear 02 sensor has been out for quite some time (years).
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Old 07-18-2006, 10:16 PM   #6
scoobdude
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Quote:
Originally Posted by hondaeater69
i don't see this problem and my rear 02 sensor has been out for quite some time (years).
Are you running ST? ( i think you are). Have made any adjustments to the idle in ST? What did you do with your rear O2 exactly (is your wideband there, are you running a 1v connection, etc?).

Also is your auto or manual? and what revision on the ecu? Maybe there is more to this than we thought. Maybe the mecahnical fix slowed the response or maybe some of the 05 code is still in there. Only other thing i can think of is i am running a JDM down pipe which puts the o2 sensor almost at that bottom bend. Maybe the location has something to do with it.
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Old 07-18-2006, 11:09 PM   #7
hondaeater69
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yes i'm running ST. No i have not touched idle settings (rpm). my rear 02 sensor is completely unpluged from the harness. I have a WB running seperate from ST in the rear Helix DP location (tuna pro). My WB has no effect or bearing on the OEM ECU.
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