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Old 02-21-2013, 08:47 PM   #1
subi305
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Default My First ever Data Log 03 WRX

So I bought my brand new accessport after having my car for three years. After installing it and uploading a 91 oct stage 2 map I data logged it and here is what i came up with.
P.s. my modds are ebay turbo back, uppipe, and drop in filter, also have a turbo xs mbc. (I'm a little concerned with the boost if any one can help lmk.


here is my data log

https://docs.google.com/spreadsheet/...2c&usp=sharing
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Last edited by subi305; 02-22-2013 at 08:42 AM. Reason: WRONG LINK
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Old 02-21-2013, 09:02 PM   #2
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Bump .
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Old 02-22-2013, 12:22 AM   #3
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What is wrong with Google Documents?

I am not going to download your file from some site that is trying to sell me crap. Just post it on Googel Documents and do not forget to make it public.
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Old 02-22-2013, 07:42 AM   #4
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Ok I'll get on that thnx
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Old 02-22-2013, 07:49 AM   #5
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fixed the link. If I need to adjust my data log list for better readings please let me know. I am still learning how to use it. I greatly apprecitate the help.
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Old 02-22-2013, 08:14 AM   #6
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Link still bad. You didn't fix the permissions.
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Old 02-22-2013, 08:42 AM   #7
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ok... permissions open. lol
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Old 02-22-2013, 11:47 AM   #8
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I will get to looking at the log, but the first thing I noticed is that you never went WOT. Check out Cobb's website for a cool video on datalogging and then try again.
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Old 02-22-2013, 12:53 PM   #9
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Quote:
Originally Posted by jebjkey View Post
I will get to looking at the log, but the first thing I noticed is that you never went WOT. Check out Cobb's website for a cool video on datalogging and then try again.

This +1. You have alot of knock though. Your cars dam is lowered and you are still getting some knock. And you are underboosting significantly as well. If you could put the stock EBC back on that would be good!
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Old 02-22-2013, 01:14 PM   #10
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You are not anywhere near target boost, you are pretty much sitting at WG spring pressure. Like above, you need the stock EBCS. Get rid of the MBC unless you want a custom tune.
Your DAM should be 16. Since you have plenty of Fine Knock Learning, you have been driving for some time with your problems. You have some positive timing adjustment and you also have negative adjustments. Negative adjustments is OK since they are small, but you have Feedback Knock Learning also and most importantly your DAM is 9. The DAM should have incremented to 16 and stayed there. It either never made it there due to your problems or it came back down to 9, does not really matter which because the end result is 9 and not 16.

How long have you been driving since you installed the AP / your last map? Have you reset the ECU for any reason since then?

I suggest you get with a tuner, have them check out your car, and get a protune (with or without the MBC).

In the mean time, load a stage 2 ACN91 map and stay out of boost.

Last edited by jebjkey; 02-22-2013 at 01:27 PM.
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Old 02-22-2013, 02:21 PM   #11
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I would offer my tuning services, but the shape of those logs is showing that you need somebody to inspect the car in person. You probably need to make sure your maintenance is up to date (intake filter/ spark plugs etc) and get that MBC out in favor of a 3 port or the stock EBC.
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Old 02-22-2013, 05:02 PM   #12
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Well I replaced my filter last week. Spark plugs are over due as well as the injectors. My ultimate goal was to throw on a vf injectors and fmic. Now idk what to do...
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Old 02-22-2013, 05:03 PM   #13
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Any input would be great. A friend recommended keeping low boost and save for those mods then tune. Does this sound like the right path?
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Old 02-22-2013, 11:14 PM   #14
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I would not add any new parts to your car without first taking it to someone in person and having them check it out. You have some problems but it might be an easy fix for a trained person to take care of with the car in front of them.

What about the questions I posted above in #10?

How many miles are on your car?

The spark plugs are a good maintenance item to take care if it has been a while since you changed them / they look like they need to be changed.

Replace the fuel filter. My fuel filter had dirt on the outlet side after 70,000 miles and the fuel in the filter when I removed it came out brown from all the dirt!

The fuel injectors may need cleaning, but unless you can be without your car for a week or two, your only option is in-tank fuel injector cleaner. I sent my fuel injectors to WitchHunter for cleaning, came back more consistent between the four and flowing anywhere from .5% to 3% better depending on the injector.

Get the car checked out before you spend any money on new parts (excluding maintenance items of course). I would put the stock EBCS back in the car and use it instead of the MBC. Honestly, since your boost is below stock values though, I do not think the MBC has anything to do with your problems.
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Old 02-23-2013, 12:06 AM   #15
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Quote:
Originally Posted by jebjkey View Post
I would not add any new parts to your car without first taking it to someone in person and having them check it out. You have some problems but it might be an easy fix for a trained person to take care of with the car in front of them.

What about the questions I posted above in #10?

How many miles are on your car?

The spark plugs are a good maintenance item to take care if it has been a while since you changed them / they look like they need to be changed.

Replace the fuel filter. My fuel filter had dirt on the outlet side after 70,000 miles and the fuel in the filter when I removed it came out brown from all the dirt!

The fuel injectors may need cleaning, but unless you can be without your car for a week or two, your only option is in-tank fuel injector cleaner. I sent my fuel injectors to WitchHunter for cleaning, came back more consistent between the four and flowing anywhere from .5% to 3% better depending on the injector.

Get the car checked out before you spend any money on new parts (excluding maintenance items of course). I would put the stock EBCS back in the car and use it instead of the MBC. Honestly, since your boost is below stock values though, I do not think the MBC has anything to do with your problems.

thnx alot guys. i already put the mbc of and and still having problems. i definetly need to see an expert. i have logs from tonight without mbc. ill upload tonight
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Old 02-23-2013, 06:58 AM   #16
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I can see your A/F learning is at zero. This puzzles me. Can you report back with your A/F learning A, B, C, and D values.

Also, find someone with a known good MAF and temporarily swap it with yours. Your car is showing classis signs of MAF failure.
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Old 02-23-2013, 08:50 AM   #17
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Originally Posted by Black94Snake View Post
I can see your A/F learning is at zero. This puzzles me. Can you report back with your A/F learning A, B, C, and D values.

Also, find someone with a known good MAF and temporarily swap it with yours. Your car is showing classis signs of MAF failure.
Interesting, I figured it was just his zone D never really got used so there is no AF Learning carried over into open loop. I see a couple spots (during the shift and when he got off the gas) that have a non-zero value.

Curious, why would a zero AF Learning value be a classic sign of MAF failure? Compared to zero g/sec airflow, for example. Especially considereing this is for zone D; it is quite possible that he does not get into zone D very often while still in closed loop fueling.
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Old 02-23-2013, 09:14 AM   #18
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Quote:
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Interesting, I figured it was just his zone D never really got used so there is no AF Learning carried over into open loop. I see a couple spots (during the shift and when he got off the gas) that have a non-zero value.

Curious, why would a zero AF Learning value be a classic sign of MAF failure? Compared to zero g/sec airflow, for example. Especially considereing this is for zone D; it is quite possible that he does not get into zone D very often while still in closed loop fueling.
I never said that a/f learning being 0 was a sign of MAF failure.
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Old 02-23-2013, 12:01 PM   #19
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OP... are these all recent mods? We kind of need a timeline or as Paul Harvey would say "the rest of the story" There's a lot going on with that car which it doesn't seem to like.
Your car maintenance needs to be up to date and your mods cannot be outside of the scope of the AP map ....PERIOD. Otherwise you are chasing your tail and there's no way to determine how the tune is performing.
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Old 02-23-2013, 12:55 PM   #20
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I never said that a/f learning being 0 was a sign of MAF failure.
I guess I misunderstood.

What are the classic signs of MAF failure that you are refering to?
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Old 02-23-2013, 03:44 PM   #21
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I guess I misunderstood.

What are the classic signs of MAF failure that you are refering to?
if you have questions, keep it in a PM. It's rude to hijack another members thread.

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Old 02-23-2013, 03:53 PM   #22
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So here is how my subaru story began. lol I bought the car in 2008 with no mods. I put on my up pipe turbo back in 09 so i have been running with no tune for some time. I also put the mbc around the same time, which btw is disconnected. I put it back to stock last night. I also did not tell you guys i was running 89 oct. i also put 93 last night and did a new log with a stg 2 93 oct map. Car still is underboosting imo. but here is the new log done last night. I really appreciate all you guys helping out.

https://docs.google.com/spreadsheet/...mc&usp=sharing
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Old 02-23-2013, 06:44 PM   #23
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bumpity bump
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Old 02-23-2013, 06:57 PM   #24
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I guess ill say it ONE more time. Find someone local with a known good MAF. Swap it in and see what happens.
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Old 02-23-2013, 07:01 PM   #25
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Quote:
Originally Posted by subi305 View Post
So here is how my subaru story began. lol I bought the car in 2008 with no mods. I put on my up pipe turbo back in 09 so i have been running with no tune for some time. I also put the mbc around the same time, which btw is disconnected. I put it back to stock last night. I also did not tell you guys i was running 89 oct. i also put 93 last night and did a new log with a stg 2 93 oct map. Car still is underboosting imo. but here is the new log done last night. I really appreciate all you guys helping out.

https://docs.google.com/spreadsheet/...mc&usp=sharing
Well if you were running 89 octane that could explain why the car was more prone to knock. Your last log was not quite as bad. After your fill up did you reset your AP? Otherwise all of the FLKC and AF Learning values from running crap gas will be carried over until your car relearns. Might not be a bad thing to reset. Eventually if things quiet down you might want to do a wot 3rd gear pull from 2,000 rpm to redline and post up.

edit: disregard I see you flashed a new map after fill up which would have reset values.
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