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Old 02-09-2013, 12:06 AM   #1
pimprezawrx
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Default 2013 STI Stage 2 Datalogs

Hey guys first time doing this.

Just got the accessport and Cobb catted downpipe last week. No other mods. Stock cat back.

2013 Sti sedan
Car has about 600 miles on it now. I couldn't take the stock tune any longer.

Stage2 93 v321 map

I did three 4th gear pulls in S#.

Everything felt ok and seems to look ok. Temp was low 60s tonight.

https://docs.google.com/spreadsheet/...nc&usp=sharing

https://docs.google.com/spreadsheet/...VE&usp=sharing

https://docs.google.com/spreadsheet/...Hc&usp=sharing

How do they look?
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Old 02-09-2013, 12:33 PM   #2
Cobb Tuning
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These logs look great to me bud. You're underboosting compared to the target by a tiny amount, but no need to fret if the car feels good. Thanks for your support and please let us know if we can be of assistance in any other way.

Cheers

Lance
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Old 02-12-2013, 11:52 AM   #3
pimprezawrx
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Thanks for the reply. The car feels fine.

Maybe you or someone else can answer another question I have.

Compared to my old 03 stage 2 Wrx, when I punch the throttle at 2500 rpms to do these pulls, it sounds totally different.

Granted, I did have a full catless turbo back exhaust on the Wrx and maybe I am just hearing more engine noise with the stock cat back and catted down pipe on the Sti.

It sounds like it's "winding up" not really turbo noise but maybe fuel pump/injectors that I just never heard before? I don't really know how to explain it.

I hear it the most when I first get on the gas.

Thanks again!
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Old 02-13-2013, 08:37 AM   #4
Cobb Tuning
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Quote:
Originally Posted by pimprezawrx View Post
Thanks for the reply. The car feels fine.

Maybe you or someone else can answer another question I have.

Compared to my old 03 stage 2 Wrx, when I punch the throttle at 2500 rpms to do these pulls, it sounds totally different.

Granted, I did have a full catless turbo back exhaust on the Wrx and maybe I am just hearing more engine noise with the stock cat back and catted down pipe on the Sti.

It sounds like it's "winding up" not really turbo noise but maybe fuel pump/injectors that I just never heard before? I don't really know how to explain it.

I hear it the most when I first get on the gas.

Thanks again!
Stock catback will certainly let you hear a lot more (than just exhaust noise) than a catless full-turbo back exhaust. Different motors as well. I wouldn't be concerned about it.

Bill
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Old 07-26-2013, 10:49 PM   #5
pimprezawrx
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Ran a log tonight going through the gears.

Car was only boosting at most just under 17.

Seems low for Stage 2.

Made me want to run a log.

What do you guys think?

https://docs.google.com/spreadsheet/...2c&usp=sharing
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Old 07-27-2013, 05:25 PM   #6
Ryan321
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You have some feedback knock and learned knock. There shouldn't be and trailing knock a in a 2.0 continuous then tapering down to 0. I would bet if your on the OTS map then your timing is to high that's causing lower amours of knock and the 1.5 learned knock.
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Old 07-29-2013, 08:49 AM   #7
Cobb Tuning
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Quote:
Originally Posted by pimprezawrx View Post
Ran a log tonight going through the gears.

Car was only boosting at most just under 17.

Seems low for Stage 2.

Made me want to run a log.

What do you guys think?

https://docs.google.com/spreadsheet/...2c&usp=sharing
If you are comparing peak boost levels for STi, it is best to do a 4th gear (or 3rd gear if 4th is too fast) WOT run from 2500 RPM on up, if you can do so safely. Just as cold dry air is dense and improves the chances of higher boost/overboosting, the opposite is also true, hot humid air reduces air density and increasing the chances of underboosting. The additional problem you have with hot conditions is that you are increasing the chance of detonation. The stock tune actually decreases the boost target when intake temps are extreme - a feature we leave in our off-the-shelf (OTS) maps. I would not recommend running the HWG map during these extreme conditions, assuming at normal temps your car hits peak boost.

Other thing is to make sure you are in Sport # mode with these maps - Sport and Intelligent will run lower boost targets.

Bill
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Old 07-27-2013, 02:15 PM   #8
paul_p1
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Hotter and humid outside? I'm guessing it is in Florida.
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Old 07-27-2013, 04:17 PM   #9
pimprezawrx
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Quote:
Originally Posted by paul_p1 View Post
Hotter and humid outside? I'm guessing it is in Florida.
Very hot and humid.

This log was at night around 10pm but probably still 85-90F and 100% humidity. Heat soak wasn't the issue because we were cruising at 80 mph for a while.
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Old 07-27-2013, 05:54 PM   #10
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The lower boost and subsequent lower air flow is due to the difference in atmospheric conditions. You may need to tweak some of the boost compensation tables, but in general you'll struggle to get the car performing in 90+ degree heat compared to whatever it was in February.....
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Old 07-27-2013, 06:37 PM   #11
Ryan321
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Quote:
Originally Posted by paul_p1 View Post
The lower boost and subsequent lower air flow is due to the difference in atmospheric conditions. You may need to tweak some of the boost compensation tables, but in general you'll struggle to get the car performing in 90+ degree heat compared to whatever it was in February.....
That's what I was thinking too but the ecu compensates for atmospheric changes. It's measured in bar and is set from the factory.
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Old 07-27-2013, 06:54 PM   #12
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Has Cobb altered those wastegate tables in particular though as part of the ROM, has it been tested in extremes? Genuine question. Subaru would have taken the car to the arctic circle and somewhere like Death Valley to develop the car.
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Old 07-27-2013, 07:56 PM   #13
Ryan321
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Quote:
Originally Posted by paul_p1 View Post
Has Cobb altered those wastegate tables in particular though as part of the ROM, has it been tested in extremes? Genuine question. Subaru would have taken the car to the arctic circle and somewhere like Death Valley to develop the car.
That's a good question. I always start from a fresh OEM map and adjust it from there. I'll check it out now.
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Old 07-27-2013, 08:04 PM   #14
Ryan321
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On my race tuner for my 05 STI between stock map and stage two there was no change.
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Old 07-28-2013, 09:44 AM   #15
pimprezawrx
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Drove the car last night after rain storm. Temps were in the 70s and felt a lot better. Didn't have time to do a log though.
Since I'm not hitting target boost would you guys recommend trying the high wastegate map? And yes, this is cobb ots stage 2 map.

Thanks
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Old 07-28-2013, 07:17 PM   #16
Ryan321
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Quote:
Originally Posted by pimprezawrx View Post
Drove the car last night after rain storm. Temps were in the 70s and felt a lot better. Didn't have time to do a log though.
Since I'm not hitting target boost would you guys recommend trying the high wastegate map? And yes, this is cobb ots stage 2 map.

Thanks
I suggest that you look at the knock and determine if it's false or a real knock event. Secondly I suggest you look at your timing map. I will let Cobb chime in about the rest. That's my two cents.
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