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Old 10-19-2014, 06:22 PM   #1
blurred
Scooby Newbie
 
Member#: 47143
Join Date: Nov 2003
Location: Toronto
Default Dyno Tune: Dynamotorsports Tune - ej257- GTX2867R - 365whp/300wtq - 18psi - 94oct

Event: dyno pull
Location: Definitive Tuning, Newmarket, Ontario, Canada
Ambient Temp: 50f
Elevation: 784 feet above sea level


Car: 2006 Subaru Impreza WRX STI
Tuner: "Tony the Tiger" - Dynamotorsports
Dyno Info: Dynapack
Transmission: 6spd stock gearset
Gear: 4th
Peak HP at RPM: 365whp@7000rpm sae
Peak Torque at RPM: 300wtq@3800rpm-6200rpm sae
Baseline hp/tq for a stock on same dyno: unknown
Target Boost: 18
Fuel: 94 Octane pump (water/meth used as a safeguard on top of tune, no power extracted)
Engine/Power Modifications: Stock longblock/cams, Garrett GTX2867R, TiAl V-Band turbing housing .86a/r, Grimmspeed TMIC, Cobb SF Intake, AMR 3" hard inlet, Dynamotorsports 3.5" Downpipe, 3" MadDad Whisper Exhaust, KillerB Holy Header/up-pipe (modified for v-band), TiAl MVS 38mm external wastegate (plumbed back into DP), Cobb AP (Hybrid MAF/SD), AEM water/meth (not used to extract power, only a safeguard)

Dyno Graph



The goal was 300lb-ft of torque from as early as possible to be kept flat as high as possible. I am very happy to be able to keep torque up at redline with the stock single avcs/cams not allowing to play with the exhaust. A mild cam is now on the shopping list as well as a cr bump.
This is a stock longblock with 138,000 miles, on the original stock clutch as well.
Some driving impressions are that this car is never out of boost once the throttle is pressed. Although on the dyno it appears to spool later the response on the road is much quicker than the vf39 and there is less lag between shifts. The pull to redline is great due to torque staying flat almost all the way.
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Last edited by blurred; 10-19-2014 at 06:32 PM.
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Old 10-20-2014, 01:44 PM   #2
Scuby04STi
Scooby Specialist
 
Member#: 328635
Join Date: Aug 2012
Chapter/Region: NWIC
Location: Portland*
Vehicle:
2004 STi GTX3076R
Rally Blue

Default

Do you happen to have a chart that included boost? I am trying to get all the info I can on the GTX2867 up to GTX3076 builds to see if one fits my needs better than the others.
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Old 10-20-2014, 04:05 PM   #3
blurred
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Member#: 47143
Join Date: Nov 2003
Location: Toronto
Default

Quote:
Originally Posted by Scuby04STi View Post
Do you happen to have a chart that included boost? I am trying to get all the info I can on the GTX2867 up to GTX3076 builds to see if one fits my needs better than the others.

I don't at the moment. I can tell you it hits 17.5psi at 3800 and rises to about 18.5psi at redline.
Because of how a Dynapack loads using a ramp time it doesn't quite show "spool" the same way as a dynojet/mustang so don't be mislead by the graphs. We compared it to an 07 (dual avcs) with a gtx3076r and that had a torque hit at 4800rpm on the same dyno. Both cars make great power at partial boosts so you really don't feel it on the road. That said, the gtx30 is definitely more laggy in comparison. If you are looking for 400ish this is the one, if you are looking for 500-550 the go for the gtx3076r but you will need to be 7800rpm plus to really take advantage.
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Old 10-20-2014, 04:36 PM   #4
Scuby04STi
Scooby Specialist
 
Member#: 328635
Join Date: Aug 2012
Chapter/Region: NWIC
Location: Portland*
Vehicle:
2004 STi GTX3076R
Rally Blue

Default

I currently have a GTX3076 on my car, 18.5psi @4k and I rev till 8k made 424whp. My engine was set-up to be run in the 21-24psi range and I was looking for 400whp+, so given that information I am finding I could down size a bit. If the boost comes on significantly sooner/quicker I will be wanting to move down. If not I will just keep this one and stick to the lower boost level. Thank you for the info.
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Old 10-21-2014, 11:08 AM   #5
rexworx
Scooby Guru
 
Member#: 103232
Join Date: Dec 2005
Chapter/Region: Tri-State
Location: GTX3076R-276/272, GTX3071R
Vehicle:
MY05 GDA,MY04FXT6spd
2.5ltr,PPG,Front LSD,4.44

Default

Very nice! the powerband looks rather fun. Powerband looks exactly like mine when I had the SteamSpeed STX67 hybrid 8cm STS TD05H turbine wheel coupled to a GTX2867r compressor wheel. This was using 30% waste gate duty cycle to hit 360ish whp and 310ish wtq by 3600rpm holding 300whp past 7200rpm at 19psi. Never turned up wgdc% on the dyno but I retuned it on the street and the low-midrange really woke up as expected.

What WGDC% did you throw at it for spool and to maintain the tabletop of trq through out?
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Old 10-23-2014, 10:50 AM   #6
blurred
Scooby Newbie
 
Member#: 47143
Join Date: Nov 2003
Location: Toronto
Default Dyno Tune: Dynamotorsports Tune - ej257- GTX2867R - 365whp/300wtq - 18psi - 9...

Quote:
Originally Posted by rexworx View Post
Very nice! the powerband looks rather fun. Powerband looks exactly like mine when I had the SteamSpeed STX67 hybrid 8cm STS TD05H turbine wheel coupled to a GTX2867r compressor wheel. This was using 30% waste gate duty cycle to hit 360ish whp and 310ish wtq by 3600rpm holding 300whp past 7200rpm at 19psi. Never turned up wgdc% on the dyno but I retuned it on the street and the low-midrange really woke up as expected.

What WGDC% did you throw at it for spool and to maintain the tabletop of trq through out?

Yes, it is incredibly fun, has an awesome mix of boost and engine response and finally feels like a proper sports car with torque not dropping off. No idea on wgdc although I did hear 23% being talked about.
Do you have a link to your dyno graph?

Here's a dyno video and a quick road video.




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Old 10-23-2014, 01:47 PM   #7
BroBroBroBroBro
Scooby Newbie
 
Member#: 338211
Join Date: Nov 2012
Chapter/Region: E. Canada
Location: Pemeal Bacon
Vehicle:
2011 wrx ewg
equal headers+frontmount

Default

where is the tuner located? nm came out nice

Last edited by BroBroBroBroBro; 10-23-2014 at 02:02 PM.
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Old 10-23-2014, 02:26 PM   #8
blurred
Scooby Newbie
 
Member#: 47143
Join Date: Nov 2003
Location: Toronto
Default

Quote:
Originally Posted by BroBroBroBroBro View Post
where is the tuner located? nm came out nice

The tuner is www.dynamotorsports.ca in Toronto, near Downsview.
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Old 10-26-2014, 12:01 PM   #9
rexworx
Scooby Guru
 
Member#: 103232
Join Date: Dec 2005
Chapter/Region: Tri-State
Location: GTX3076R-276/272, GTX3071R
Vehicle:
MY05 GDA,MY04FXT6spd
2.5ltr,PPG,Front LSD,4.44

Default

I do have a old chart but its in storage with 95% of our belongings till this coming weeking till the closing is done on the house we bought. Next week I can post it up. I need to post up in te steamspeed thread anyhoo...
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