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Old 06-24-2012, 07:51 PM   #1
Dratsum
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Default Request: New Cobb Stage 2 Data Log Review

Hey All,

Just upgraded my 04 WRX wagon to stage 2... went all Cobb!

Installed on Friday the 22nd:
Cobb SF Intake
Cobb Air Box
Cobb MAF Hose
Cobb SS 3" turbo Back on cobb hangers
Cobb battery tie down (+5 hp)


AP tuned to Stage 2 for 93 Octane gas. (I got a ton of cobb stickers and license plate frames if anybody needs them :P)

Everything seems to be running great... I'm hearing all kinds of new sounds, aside from a great exhaust gurgle, and have no way of being sure it's all normal. I hear a moderate whistle that seems to coincide with the Turbo spooling, coming from under the car, and the intake sounds like Darth Vader breathing when I give it the gas... which is kinda awesome. (or like a hospital respirator, but that description doesn't sound as cool)

I've had about 5 or so warming cycles under me since Friday, and just got a data log tonight.

EDIT: Updated Data Log Link https://docs.google.com/spreadsheet/...mUxNDhuanp3c3c

Could someone take a look and see if everything seems ok in the log?

Thanks,
Drats.
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Last edited by Dratsum; 06-25-2012 at 11:28 AM. Reason: Updated log link and edited for more better grammer
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Old 06-24-2012, 08:08 PM   #2
lukeskywrx
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What MAF? -Speed Density!

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you got a little fine learning knock on boost, I generally like to avoid that but its not too bad.

That is not alot of boost for stage 2 and timing is overall pretty low, but thats a generic stage 2 flash
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Old 06-24-2012, 08:13 PM   #3
Dratsum
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- Low boost or low timing be indicative of another issue, like a boost leak or something?
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Old 06-25-2012, 08:59 AM   #4
Cobb Tuning
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Quote:
Originally Posted by Dratsum View Post
Hey All,

Just got my 04 WRX wagon to stage too... went all Cobb... installed on Friday the 22nd:

Cobb SF Intake
Cobb Air Box
Cobb MAF Hose
Cobb SS 3" turbo Back on cobb hangers
Cobb battery tie down (+5 hp)

Tuned to Stage 2 for 93 Octane gas on Cobb Access Port.... I got a ton of cobb stickers and license plate frames if anybody needs them :P

So - everything seems to be running great... I'm hearing all kinds of new sounds, aside from a great exhaust gurgle, and want to make sure it's all normal.. I hear a moderate whistle that I think is the Turbo, and my engine sounds like Darth Vader breathing when I give her the gas... which is kinda awesome. (or like a hospital respirator, which doesn't sound as cool)

I've had about 5 or warming cycles under me since Friday, and just got a data log tonight.

Data log: https://dl.dropbox.com/u/2593813/datalog20.csv

Would someone who can read this take a look and see if everything seems ok?

Thanks,
Drats.
Log looks fine except that you are underboosting. A little bit of fine knock learning, but that could be nothing. I would drive on the map for about a week and then view/log the A/F Learning 1 A, B, C, D values. We can then make sure there are no potential fueling issues which will usually show up in A/F Learning 1 values. Generally, these should be within +/- 5%, with any values outside of +/- 8% indicating a potential problem. Aftermarket intakes will always allow you to hear more induction/turbo noises, but checking the long-term fuel trims after enough driving will generally allow you to see potential common issues like intake tract leaks or bad/contaminated MAF sensor. If everything checks out then, you can download and reflash the high wastegate (HWG) map which should improve boost.

Bill
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Old 06-25-2012, 09:06 AM   #5
waltah
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is there a map that includes the battery tie down? you may need a protune.

your log link is broken
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Old 06-25-2012, 10:46 AM   #6
Dratsum
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Thanks Bill,

I live in NYC and don't drive to commute - its mostly a weekend car.. How many miles should I drive it before checking the log again?

//

Hahaha... Yeyr dawg, ap Stage 2.1+ 93 octane / Secure battery.. V3.963. Weird, link worked fine last night, I'll upload to G.docs and resend.

Drats
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Old 06-25-2012, 11:04 AM   #7
Cobb Tuning
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Originally Posted by Dratsum View Post
Thanks Bill,

I live in NYC and don't drive to commute - its mostly a weekend car.. How many miles should I drive it before checking the log again?
Drive until you need to fill up with gas (from a full tank), should be more than sufficient.

Bill
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Old 06-25-2012, 11:20 AM   #8
Dratsum
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Thanks Bill, will do.

Waltah, here's the log again on gdocs... for the record.

https://docs.google.com/spreadsheet/...mUxNDhuanp3c3c

Drats
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Old 07-06-2012, 09:51 AM   #9
Dratsum
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Hey - I've posted a new data log after running out 3 or 4 tanks of gas. AP tuned to Stage 2 for 93 Octane gas - Still looks like the boost is low - and I got a little more FKL.. Should I switch to a HWG map?

https://docs.google.com/spreadsheet/...XhodkRESGNyaEE

thanks - Drats
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Old 07-06-2012, 10:00 AM   #10
Cobb Tuning
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Originally Posted by Dratsum View Post
Hey - I've posted a new data log after running out 3 or 4 tanks of gas. AP tuned to Stage 2 for 93 Octane gas - Still looks like the boost is low - and I got a little more FKL.. Should I switch to a HWG map?

https://docs.google.com/spreadsheet/...XhodkRESGNyaEE

thanks - Drats
Your long-term fuel trims look fine. I would go ahead and reflash the HWG map, but take some additional logs over time. The HWG map may not be enough to allow you to hit your target and you may need to tighten the wastegate arm, but let's see how it turns out. Also, you do not want to start your wide open throttle run below 2000 RPM (it is not a good idea to lug the engine like that).

Bill
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Old 07-06-2012, 07:11 PM   #11
Dratsum
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Cool - thanks!
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Old 10-30-2012, 05:13 PM   #12
02 bug eye wagon
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Quote:
Originally Posted by Cobb Tuning View Post
Your long-term fuel trims look fine. I would go ahead and reflash the HWG map, but take some additional logs over time. The HWG map may not be enough to allow you to hit your target and you may need to tighten the wastegate arm, but let's see how it turns out. Also, you do not want to start your wide open throttle run below 2000 RPM (it is not a good idea to lug the engine like that).

Bill
+1 on WOT at low rpm's. Might check for boost leaks as well and if I recall correctly, if A/F Correction 1 is very high that usually means boost leak? Someone let me know if I am wrong on this though.
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