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Old 06-14-2013, 12:09 AM   #1
japanesestar
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Default WOT pull log. Need advice plz.

Hello scoob brethren. I did a pull in 3rd as recommended and got some interesting results. I have a 2005 WRX with 150k on the clock. Its been running a bit strange lately with slight hesitation and what appears to be an A/F delayed reaction to skinny pedal. I have an AEM wideband that i have not gotten the usb/serial cable for yet in order to log it.

The car has the factory map on it (-p0037 code).
I have an spt intake, silicone inlet, gutted uppipe, 3" catless ebay exhaust.
I've tested compression. Driver's side first (145 for both) and pass (~139 for both)

https://docs.google.com/spreadsheet/...p=docslist_api

Hopefully that works. I also have a couple of bad videos on youtube with me making cheesy comments about the femininity of the issue.

https://www.youtube.com/watch?v=6an2...e_gdata_player

https://www.youtube.com/watch?v=xRmu...e_gdata_player

In the datalog, yellow is a/f (factory), pink is FLKC, blue is engine load (g/rev), and green is MAP. Notice during the swinging that my foot has nothing to do with it.

I'm a noob at tuning, but really want to fix this and tune properly for the parts I have. I should mentioned that this issue has just recently surfaced and that I have had those parts on for a long time. The car ran "fine" up until this, although my buddy claims its the slowest WRX he's ever been in...

I totally expect a ruler on the hand for not tuning sooner, sorry boys. I'm pretty busy with a FT job and a wife and daughter, oh and school. Let the flaming begin!
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Old 06-14-2013, 06:33 PM   #2
mechatricity
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'15 WRX 6MT CWP

Default

Need to make the doc public.
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Old 06-14-2013, 07:40 PM   #3
japanesestar
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Quote:
Originally Posted by mechatricity View Post
Need to make the doc public.
Sorry. Noob at google drive. It's public now.
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Old 06-15-2013, 02:00 PM   #4
dux10
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Holy Knock batman! lol

Try cleaning the MAF sensor. If that doesn't help, replace the front O2 Sensor.

Steve @ Pullz-On Tuning
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Old 06-15-2013, 02:59 PM   #5
japanesestar
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Default

Quote:
Originally Posted by dux10 View Post
Holy Knock batman! lol

Try cleaning the MAF sensor. If that doesn't help, replace the front O2 Sensor.

Steve @ Pullz-On Tuning
Lol. That's what I thought. Will do.
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Old 06-15-2013, 03:09 PM   #6
cosseywrx
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Knock knock? Whos there? Blown motor!! Lol jk.

Tune tune tune!
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Old 06-15-2013, 04:18 PM   #7
japanesestar
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Quote:
Originally Posted by cosseywrx View Post
Knock knock? Whos there? Blown motor!! Lol jk.

Tune tune tune!
I never used to have this knocking. I used to check learning view all the time with no real issues. My IAM has always been 16, and still is. I'll have to clean the MAF (cleaned it about 4 months ago) and possibly replace the A/F sensor. Sucks being busy.
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Old 06-16-2013, 01:30 PM   #8
dux10
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Quote:
Originally Posted by japanesestar View Post
I never used to have this knocking. I used to check learning view all the time with no real issues. My IAM has always been 16, and still is. I'll have to clean the MAF (cleaned it about 4 months ago) and possibly replace the A/F sensor. Sucks being busy.
Some of the 16bit cars (02-05 WRX's) don't do too well with the stock rom. I've only come across 2 others on 93 that were horrible and one of them had a post MAF leak.

Steve @ Pullz-On Tuning
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Old 06-16-2013, 01:53 PM   #9
japanesestar
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Quote:
Originally Posted by dux10 View Post

Some of the 16bit cars (02-05 WRX's) don't do too well with the stock rom. I've only come across 2 others on 93 that were horrible and one of them had a post MAF leak.

Steve @ Pullz-On Tuning
I did a rigged-up smoke test(didn't work well) and had smoke coming from the MAF where it inserts into the SPT intake. I haven't had a chance to find a new o-ring but did make a gasket from some really thin, high density foam. I'm not sure how much this leak would affect it, but I have to believe it doesn't help. I am going to perform a better smoke test soon just to find any low pressure leaks.

On the romraider forums there is a "stage 2" rom that I was going to try, obviously very cautiously, but don't want to until I believe all the little/mechanical things are fixed. Any thoughts on that?
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Old 06-17-2013, 09:36 AM   #10
japanesestar
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Default

Quote:
Originally Posted by dux10 View Post
Holy Knock batman! lol

Try cleaning the MAF sensor. If that doesn't help, replace the front O2 Sensor.

Steve @ Pullz-On Tuning
I thought the ecu ignored the A/F sensor during WOT...
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Old 06-17-2013, 10:04 AM   #11
nmlittlebigman
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Quote:
Originally Posted by japanesestar View Post
I thought the ecu ignored the A/F sensor during WOT...
It does, but the ecu will apply the D range fuel trim (learned in CL) into wot (OL fueling).
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Old 06-17-2013, 11:30 AM   #12
japanesestar
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Wow, I have alot to learn...In my D range from learning view, I have -4.59% learned. What would cause this? I would think it would add fuel based on the parts I have...
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Old 06-17-2013, 11:43 AM   #13
nmlittlebigman
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Quote:
Originally Posted by japanesestar View Post
Wow, I have alot to learn...In my D range from learning view, I have -4.59% learned. What would cause this? I would think it would add fuel based on the parts I have...
Your fuel trims are based upon what the maf sensor and front 02 sensor are reading in closed loop as compared to your fueling targets in your map. If either of those sensors are faulty your trims will be off.

You might want to read the guide for a better explanation:

http://forums.nasioc.com/forums/show....php?t=1626520
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Old 06-17-2013, 11:31 PM   #14
japanesestar
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I do understand that part. I guess what I should have asked was, are there tell-tale signs of either sensor being bad when they appear to still function correctly? I know datalogging my wideband would help. I appreciate your patience..there are still some vital checks I need to perform to rule out any variables.
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Old 06-18-2013, 12:05 AM   #15
nmlittlebigman
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Pull a Learningview if you can and post it up. Otherwise you can check the A/F learning #1 stored values for A, B,C,D airflow ranges. Those might tell us more. Like you mentioned comparing wideband to front o2 sensor (AF sensor 1) would be a good thing to do.
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Old 06-18-2013, 12:29 AM   #16
japanesestar
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Ok. I will post a learningview asap.
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Old 06-18-2013, 12:32 PM   #17
dux10
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Quote:
Originally Posted by japanesestar View Post
I thought the ecu ignored the A/F sensor during WOT...

It does, but while cruising in your video your AFR was bouncing all over the place. I've seen this happen on several cars and each time it was determined to be the primary O2 sensor.

Steve @ Pullz-On Tuning
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Old 06-18-2013, 12:43 PM   #18
japanesestar
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Quote:
Originally Posted by dux10 View Post

It does, but while cruising in your video your AFR was bouncing all over the place. I've seen this happen on several cars and each time it was determined to be the primary O2 sensor.

Steve @ Pullz-On Tuning
Ok. I have no problems with replacing that (except the $$). I'm surprised it's made it this many years/miles. It can't hurt, that's for sure. I has half a mind to replace it just for good measure, so I'm glad u said that. Oh, andi had no intention of recording my reflection. Lol. I noticed after. Derp.
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Old 06-18-2013, 12:59 PM   #19
dux10
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Technically, the O2 sensor is a maintenance item to be replaced regularly. lol

Steve @ Pullz-On Tuning

Quote:
Originally Posted by japanesestar View Post
Ok. I have no problems with replacing that (except the $$). I'm surprised it's made it this many years/miles. It can't hurt, that's for sure. I has half a mind to replace it just for good measure, so I'm glad u said that. Oh, andi had no intention of recording my reflection. Lol. I noticed after. Derp.
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Old 06-18-2013, 01:03 PM   #20
japanesestar
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Hopefully, this link/post works. This is actually after running about a 30% mix of E85 to see if there was any false knock. This looks way better in terms of knock. I don't have my other laptop to upload a recent 93 learningview, but I will asap
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Old 06-18-2013, 01:05 PM   #21
japanesestar
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Quote:
Originally Posted by dux10 View Post
Technically, the O2 sensor is a maintenance item to be replaced regularly. lol

Steve @ Pullz-On Tuning
Shouldn't we be calling it an A/F sensor?
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Old 06-18-2013, 01:35 PM   #22
dux10
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You can. I believe that's the correct technical term but most people know it as an Oxygen sensor. lol

Steve @ Pullz-On Tuning
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