First reflash - 05 LGT MickeyD stage 1

Hello,

 

My wagon just recently pushed past 50K miles and I decided to learn something new, and hopefully not blow anything up. Yup, I'm a newbie. I've noticed that the engine would occasionally idle rough when it's cold and wet out and I want to see if I can make that go away. I have no performance modifications added at this time. Stock intake, exhaust, etc.

 

 

Stock tune

My Learning View snapshots looked like the following with the stock ECU:

 

(91 octane)

CAL ID:A2WC521N
Description: 05 USDM Legacy GT MT
ECU ID:2F12785506

IAM,1.0000

A/F Learning #1:
0 - <5.60,5.60 - <10.00,10.00 - <40.00,40.00+
9.70     ,9.90         ,1.50          ,-0.80 

FLKC Table  ,0 - <0.85,0.85 - <1.10,1.10 - <1.35,1.35 - <1.60,1.60+
0 - <1650   ,0.00     ,0.00        ,0.00        ,0.00        ,0.00 
1650 - <2600,0.00     ,0.00        ,0.00        ,0.00        ,0.00 
2600 - <3200,0.00     ,0.00        ,0.00        ,0.00        ,0.00 
3200 - <4000,0.00     ,0.00        ,0.00        ,0.00        ,0.00 
4000 - <4800,0.00     ,0.00        ,-1.40       ,0.00        ,0.00 
4800 - <5800,0.00     ,0.00        ,0.00        ,0.00        ,0.00 
5800+       ,0.00     ,0.00        ,0.00        ,0.00        ,0.00 

 

(93 octane)

CAL ID:A2WC521N
Description: 05 USDM Legacy GT MT
ECU ID:2F12785506

IAM,1.0000

A/F Learning #1:
0 - <5.60,5.60 - <10.00,10.00 - <40.00,40.00+
10.00    ,1.20         ,0.90          ,0.00  

FLKC Table  ,0 - <0.85,0.85 - <1.10,1.10 - <1.35,1.35 - <1.60,1.60+
0 - <1650   ,0.00     ,0.00        ,0.00        ,0.00        ,0.00 
1650 - <2600,0.00     ,0.00        ,0.00        ,0.00        ,0.00 
2600 - <3200,0.00     ,0.00        ,0.00        ,0.00        ,0.00 
3200 - <4000,0.00     ,0.00        ,0.00        ,0.00        ,0.00 
4000 - <4800,0.00     ,0.00        ,0.00        ,0.00        ,0.00 
4800 - <5800,0.00     ,0.00        ,0.00        ,0.00        ,0.00 
5800+       ,0.00     ,0.00        ,0.00        ,0.00        ,0.00

 

Overall, I think the views / log looked pretty clean but A/F correction had to add fuel (running lean?) in low load range.

 

 

Stage 1 map

After some reading, I decided to try MickeyD's LGT stage 1 map. My results are kind of like that of 311logan311 last year, but still seems to be running a shade lean and adding fuel especially in the lower load ranges.

 

Here's learning view after 10 miles of driving with the new map:

CAL ID:A2WC521N
Description: 05 USDM Legacy GT MT
ECU ID:2F12785506

IAM,1.0000

A/F Learning #1:
0 - <5.60,5.60 - <10.00,10.00 - <40.00,40.00+
8.50     ,0.00         ,0.00          ,0.00  

FLKC Table  ,0 - <0.85,0.85 - <1.10,1.10 - <1.35,1.35 - <1.60,1.60+
0 - <1650   ,0.00     ,0.00        ,0.00        ,0.00        ,0.00 
1650 - <2600,0.00     ,0.00        ,0.00        ,0.00        ,0.00 
2600 - <3200,0.00     ,0.00        ,0.00        ,0.00        ,0.00 
3200 - <4000,0.00     ,0.00        ,0.00        ,0.00        ,0.00 
4000 - <4800,0.00     ,0.00        ,0.00        ,0.00        ,0.00 
4800 - <5800,0.00     ,0.00        ,0.00        ,0.00        ,0.00 
5800+       ,0.00     ,0.00        ,0.00        ,0.00        ,0.00 

 

And after 50+ miles:

CAL ID:A2WC521N
Description: 05 USDM Legacy GT MT
ECU ID:2F12785506

IAM,1.0000

A/F Learning #1:
0 - <5.60,5.60 - <10.00,10.00 - <40.00,40.00+
11.80    ,4.10         ,2.90          ,0.10  

FLKC Table  ,0 - <0.85,0.85 - <1.10,1.10 - <1.35,1.35 - <1.60,1.60+
0 - <1650   ,0.00     ,0.00        ,0.00        ,0.00        ,0.00 
1650 - <2600,-0.35    ,0.00        ,0.00        ,0.00        ,0.00 
2600 - <3200,0.00     ,0.00        ,0.00        ,0.00        ,0.00 
3200 - <4000,0.00     ,0.00        ,0.00        ,0.00        ,0.00 
4000 - <4800,0.00     ,0.00        ,0.00        ,0.00        ,0.00 
4800 - <5800,0.00     ,0.00        ,0.00        ,0.00        ,0.00 
5800+       ,0.00     ,0.00        ,0.00        ,0.00        ,0.00 

 

I'm wondering if I should do any MAF scaling. I did more MAF logging yesterday and got the following plot, attached.

 

Questions

Do the logs below appear relatively safe? My knock sum at least doesn't go up much during WOT, from what I can tell. I'm attaching two logs where it did occur though. Should I be concerned at all with A/F learning range A being higher than 5%?

romraiderlog_20101017_1516_stock1.csv

romraiderlog_20101029_002858_stg1-1.csv

romraiderlog_20101029_103007_stg1-2.csv

If you're knocking at wot you want to fix it before doing anymore wot runs. You might need to pull a bit of timing at 5400 rpm and 2.4 load or so.

 

Is it a stock intake with oem paper filter? It the airbox sealed correctly? The higher numbers in the low af ranges may be indicative of a leak somewhere around the airbox.

Check for intake and vacuum leaks. Also check for exhaust leaks before the front O2 sensor.

Thanks for the help!

 

I don't see any airbox leaks visually, but it 's tough for me to see if the bottom of the airbox is lined up properly. I tried to reseat it (making sure the tabs on the bottom fit snugly) but that didn't seem to make a difference. Looks like I may have to check the exhaust side. Should I just keep the stock map until I sort out the range A learning? I get basically the same A/F learning numbers with the stock map. At least it's not maxed out like I've seen with some other learning views here, so I suppose the compensation is working...

 

After reviewing all the logs I collected the other day, I observed a single knock in the last out of 5 full throttle runs when I was using that stage 1 map. However the knock sum went up a bit more during cruise and at speeds below 3K rpm when compared to stock, so I'm tallying up all the cells where that occurred to pull some timing.

 

When making adjustments for single knock events, does one usually pull a full degree or more?

 

Sorry for all the questions!

If you got one knock event out of 5 in in the 5k range, I would start by pulling .35 or .7 degrees. If you get more consistent knock you may need to pull a degree or more, but if you do you should look at tapering some down in the cells around it to keep it fairly smooth. You don't want large transitions in timing from cell to cell.

 

You'll get some random cruising knock and trying to chase that all down and fix it is usually pretty futile imo. I wouldn't mess with knock events under 1 load or so.

 

As for the af A range, if it is up that high on both maps there is most likely some hardware issue going on. I would pull the airbox out, maybe replace the filter with a new stock filter while you're at it and put it all back together carefully make sure everything is lined up and sealed.