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Old 10-06-2012, 03:23 PM   #1
danger1138
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Join Date: Apr 2011
Location: QUEENS NY
Vehicle:
04 rex luger!

Default A/f values. Is this normal?

Guys just wanted to chime in to see if these numbers are normal or if I have some sort of fuming issue

Af correction Fluctuates but at idle is at 0
Af learning a is at 10.0
Af learning b is 11.9
Af learning c is 1.6
Af learning d is 0
Af learning 1 is at 10.2
Vac at idle is at -9.0
DAM at 8

All these numbers are while cruising at 60 mph are these number normal or what
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Old 10-06-2012, 03:41 PM   #2
danger1138
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Read these on cobb ap, mods;
04 wrx hybrid
16gxt
750cc
Stock bcs
Catted downpipe
Sti up
Stock ported headers
Spt intake
Stock wrx tmic
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Old 10-06-2012, 03:47 PM   #3
quazimoto
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Regarless of the corrections you are in closedloop anyways and the AFR will be 14.7:1 if you are cruising..........

You DAM is 8. Did you just reset your ECU?
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Old 10-06-2012, 04:19 PM   #4
the suicidal eggroll
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No, those are not normal.

AFL A-D should all be close to 0, ideally within about 3-5%
DAM should be 16
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Old 10-06-2012, 04:28 PM   #5
danger1138
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Quote:
Originally Posted by quazimoto
Regarless of the corrections you are in closedloop anyways and the AFR will be 14.7:1 if you are cruising..........

You DAM is 8. Did you just reset your ECU?
No havent reset my ecu since like 2 weeks ago.
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Old 10-06-2012, 04:39 PM   #6
danger1138
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I know negative numbers are indicative of a vac leak, what about my numbers being all in the positive scale? Also i noticed when browsing at the tgv voltage, the right read .4 volts and the left side read 0..
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Old 10-06-2012, 04:43 PM   #7
the suicidal eggroll
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Positive means it's adding fuel, negative means it's removing fuel. A vacuum leak will show positive since it needs to add fuel to correct for the leak.
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Old 10-06-2012, 04:50 PM   #8
danger1138
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Thats odd. Ive checked for vac leaks twice in the past month spraying carb cleaner and turned up with nothing. I also took it to a shop that has experience with subies, not tribecas or legacy wagons, mainly sti's/wrx's, and they also applied the carb cleaner spray looking for vac leaks and got no results. They told me everything looks good and thats how a hybrid is supposed to sound and drive... I may have some type of exhaust leak, but i doubt that will hinder performance nor cause fluctuations in the A/F of the car.
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Old 10-06-2012, 08:23 PM   #9
quazimoto
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Who tuned the car?
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Old 10-06-2012, 10:02 PM   #10
danger1138
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A reputable shop in CT. In his defense my tuner didnt exactly finish the tune yet. I went the first time and was getting spark blowout, he told me go fix the issue then come back. Changed coil packs, went back, and had the same issue. Again told me to come back once issue has been resolved. He made a map for me, and ive had it on the car since.
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Old 10-07-2012, 06:17 AM   #11
quazimoto
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If you were getting spark blow out then you needed to close the plug gap. You wasted money on coil packs.
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Old 10-07-2012, 12:32 PM   #12
izergfx
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Quote:
Originally Posted by quazimoto View Post
If you were getting spark blow out then you needed to close the plug gap. You wasted money on coil packs.
Hardly a waste of money. Closing gap from optimal should be done as a last resort.

If there's any way to get more energy in the spark without closing the gap, it is a much better option. Step 1 is adjusting dwell to the limit of the coilpack, then replace/upgrade them.
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Old 10-07-2012, 01:38 PM   #13
danger1138
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04 rex luger!

Default

Quote:
Originally Posted by quazimoto
If you were getting spark blow out then you needed to close the plug gap. You wasted money on coil packs.
It was past due anyways. I bought car with 140k, who knows if original owner ever changed them..
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