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Old 11-09-2008, 09:55 PM   #1
Cobb Tuning
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Default Cobb 09 WRX Stage 2 Results

Here is a quick look at the latest results with our 2009 WRX. Our previous post (http://forums.nasioc.com/forums/show....php?t=1633679) outlined the results of this 09 with just an Accessport Protune. For the next stage, we added a Cobb downpipe combined with the SPT exhaust.

With a bit more boost, and a bit leaner mixture, we extracted 317 lb-ft of torque and 281 whp on Oregon pump 92 octane! Here is a look at the Stage 2 compared to stock. Note this is with the SPT exhaust, which isn’t the freest flowing exhaust compared to some aftermarket exhausts.




As you can see, the stage 2 setup has a huge torque gain everywhere. If you saw this post without a heading, you would think it is from a Stage 2 STI.

Compared to the Stage 1, the addition of the downpipe gave us more torque across the powerband.



As typical with the STI, the car responds well to a slightly leaner mixture. Here are two runs in the Stage 2 setup with the higher hp run targeting AFRs around 11.8-11.9



The boost used for the stock, stage 1, and stage 2 runs.


Obviously the comparison to a Stage 2 STI in inevitable. This comparison is to an 07 Stage 2 STI with a real 3" aftermarket exhaust, and a bit more boost then the 09 WRX setup. The shape gives you a good idea about the 09 Turbo. It appears the 09 WRX turbo is indeed a VF43 sized turbo with the Legacy/WRX compressor cover.


Last but not least, here is a look at the 09 WRX vs the 08 WRX, in stock form. As you can see, the 08 WRX has a torque advantage until about 4000rpm, at which point the 09 WRX takes over and runs all the way to redline. The 09 has more lag then the 08, much like the 08 STI vs the 08 WRX.



We are going to add a larger TMIC this week, so look for some more results. Based on the numbers so far, it seems the 09 WRX is a bit underrated at 265 hp. This car is the sleeper of the Subaru lineup. With the longer 5 speed gears, it will give the STIs a significant challenge.

Cheers,

Jeff Sponaugle
Research Caibrator

Surgeline Tuning
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Last edited by Cobb Tuning; 11-09-2008 at 10:48 PM.
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Old 11-09-2008, 10:24 PM   #2
Cobb Tuning
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Oh, and here is a look at this 09 WRX Tune vs my 08 STI last year as Stage 2. This isn't an apples to apple comparison, as I was pushing the 08 STI much harder (more boost), but it does shed some light about the dual AVCS and perhaps the compressor cover effect on spoolup. It seems as though the 08 STI is able to spin up this size turbo just a bit faster.


Last edited by Cobb Tuning; 11-09-2008 at 10:42 PM.
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Old 11-09-2008, 10:32 PM   #3
r12rex
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Nice job guys! I knew these things were beasts! Subaru needs to do something about the STi!

Our older gen STi's are slowly becoming obsolete...we need more power!

Kind Regards,
Ryan
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Old 11-09-2008, 10:36 PM   #4
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what downpipe?
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Old 11-09-2008, 10:37 PM   #5
r12rex
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It's a cobb downpipe
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Old 11-09-2008, 10:39 PM   #6
albie1kanobi
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now lets see what that baby can do on pump in the 1/4 mile!
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Old 11-09-2008, 10:47 PM   #7
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Quote:
Originally Posted by albie1kanobi View Post
now lets see what that baby can do on pump in the 1/4 mile!
Indeed, if it were only not raining here in Portland until, well, about March of so. ;(

Quote:
Originally Posted by r12rex View Post
Nice job guys! I knew these things were beasts! Subaru needs to do something about the STi!

Our older gen STi's are slowly becoming obsolete...we need more power!

Kind Regards,
Ryan
This is just the shot in the arm the WRX needed. While it does loose a bit on the low end spoolup, the car now feels like a proper sized turbo car. With the gear box as is, it is no surprise these cars get such great 0-60 times. In the end, this platform is very similar to the STI, but the STI 6 speed still has a huge advantage in the larger power application. I don't think you will see too many 650whp WRXs using the stock 5 speed transmission.

Cheers,

Jeff Sponaugle
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Old 11-09-2008, 10:56 PM   #8
Tgui
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Quote:
Originally Posted by Surgeline Tuning View Post
Indeed, if it were only not raining here in Portland until, well, about March of so. ;(



This is just the shot in the arm the WRX needed. While it does loose a bit on the low end spoolup, the car now feels like a proper sized turbo car. With the gear box as is, it is no surprise these cars get such great 0-60 times. In the end, this platform is very similar to the STI, but the STI 6 speed still has a huge advantage in the larger power application. I don't think you will see too many 650whp WRXs using the stock 5 speed transmission.

Cheers,

Jeff Sponaugle
In all reality, the majority of people I've dealt with have been more than happy with stage 2 power. As long as the 5 speed holds together at this power lever, I'd say that Subaru did their work and made available an awesome car capable of great numbers

-E-
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Old 11-10-2008, 12:14 AM   #9
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Wow those new 09's are pretty beefy!
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Old 11-10-2008, 12:38 AM   #10
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So if an 08 owner were to pick up a VF-52 and slap it on... will we be able to load a stg1-stg2 map for an 09 WRX on the 08? or will this require a protune?
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Old 11-10-2008, 09:25 AM   #11
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any input on how the 09 wrx trans seems to be? has it got any better than the previous years? or will only time tell?
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Old 11-10-2008, 09:59 AM   #12
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those numbers are impressive, didn't realise the 09's were such beasts
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Old 11-10-2008, 10:27 AM   #13
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I wonder if an FMIC would allow one to hit 300whp.

But this is a Mustang dyno so it reads low right?
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Old 11-10-2008, 10:52 AM   #14
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Do you have any 2008 Dyno maps with TBE and TMIC?
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Old 11-10-2008, 11:43 AM   #15
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Any info on fuel injectors or fuel pump? Are you guys anywhere closed to maxxed out or did you guys replace them?

If not that's pretty impressive for a midly tuned WRX!!
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Old 11-10-2008, 11:47 AM   #16
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Quote:
Originally Posted by caracer22 View Post
So if an 08 owner were to pick up a VF-52 and slap it on... will we be able to load a stg1-stg2 map for an 09 WRX on the 08? or will this require a protune?
I assume, but still have to confirm, that the 09 WRX has a different fuel pump from the 08 WRX (perhaps it has the STI fuel pump). Everything else looks similar, but I would have to test one on the dyno first to make sure.

Quote:
Originally Posted by imstuner View Post
Do you have any 2008 Dyno maps with TBE and TMIC?
I am going to dig around and see what I can find today.

Quote:
Originally Posted by GSXR View Post
Any info on fuel injectors or fuel pump? Are you guys anywhere closed to maxxed out or did you guys replace them?
If not that's pretty impressive for a midly tuned WRX!!
Not yet, but I should be able to find out the fuel pump details later today. This car has the stock injectors and pump. I believe the injectors were nearly maxed out, certainly greater then 90%. I'll check the logs and see how it looks.

Jeff Sponaugle
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Old 11-10-2008, 12:04 PM   #17
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impressive, and with the injectors being nearly maxxed out, would that require an upgrade or would that be safe to run with stg 2? Also, any chance of slapping on an after market exhaust, something like a 3"?
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Old 11-10-2008, 12:37 PM   #18
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Quote:
Originally Posted by sponaugle View Post
I assume, but still have to confirm, that the 09 WRX has a different fuel pump from the 08 WRX (perhaps it has the STI fuel pump). Everything else looks similar, but I would have to test one on the dyno first to make sure.
IIRC the 08 wrx and sti have the SAME fuel pump.
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Old 11-10-2008, 01:11 PM   #19
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^^^ thats what i thought...And injectors
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Old 11-10-2008, 01:16 PM   #20
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huh, might have to add this turbo to my list of options.
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Old 11-10-2008, 01:33 PM   #21
sponaugle
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Quote:
Originally Posted by Sedlmeier101 View Post
IIRC the 08 wrx and sti have the SAME fuel pump.
Quote:
Originally Posted by caracer22 View Post
^^^ thats what i thought...And injectors
No, the 08 WRX has a 155l/hr pump(42022AG040), while the 08 STI has a 175l/hr pump(42022FG040).

Cheers,

Jeff Sponaugle

Last edited by sponaugle; 11-10-2008 at 01:42 PM.
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Old 11-10-2008, 02:14 PM   #22
Infamous1
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Quote:
Originally Posted by Sedlmeier101 View Post
IIRC the 08 wrx and sti have the SAME fuel pump.
No the 08 WRX shares the same pump as the LGT.
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Old 11-10-2008, 02:19 PM   #23
jim1969
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Quote:
Originally Posted by Infamous1 View Post
No the 08 WRX shares the same pump as the LGT.
what size pump does the 09 WRX have?
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Old 11-10-2008, 03:14 PM   #24
sponaugle
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Quote:
Originally Posted by sponaugle View Post
I assume, but still have to confirm, that the 09 WRX has a different fuel pump from the 08 WRX (perhaps it has the STI fuel pump). Everything else looks similar, but I would have to test one on the dyno first to make sure.

I am going to dig around and see what I can find today.
Jeff Sponaugle
Quote:
Originally Posted by jim1969 View Post
what size pump does the 09 WRX have?
As per the previous post.
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Old 11-10-2008, 05:34 PM   #25
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this is great news for legacy GT owners. can't wait to see what the top mount does...
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