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Old 11-12-2009, 06:22 PM   #1
Element Tuning
NASIOC Vendor
 
Member#: 54918
Join Date: Feb 2004
Chapter/Region: MAIC
Location: Gaithersburg, MD
Vehicle:
673 WHP Element
Tuning Pro Comp Engine

Default Element Tuning Pro Comp 2.5 STi Engine, Hydra EMS, GT75, Hydramist 602 WHP

Event: Phil Grabow Hydra EMS Tune
Location: Element Tuning, Gaithersburg, Maryland
Ambient Temp: 71.81 degrees
Elevation: Sea level
Weather: Raining
Track and Conditions: NA
Tires: Dunlop Z Star



So many ask what is a GT75? We name our turbocharger combinations based on the compressor flow. This turbocharger kit is our GT65 kit but with the compressor wheel size increased and also the turbine wheel size but it still uses the .82 exhaust housing. It was something I tested years ago and found the response too slow for Time Attack compared to the GT65 which spooled quicker and made the same power. I do think if we upgraded this car's header and intake manifold it would come alive.

This dyno reads about 7% low from my experience but 600 whp on this dyno has proven 140 mph trap speeds.

Car: 2005 Subaru STi
Tuner: Phil Grabow, Element Tuning
Dyno Info: Dynajet
Peak HP at RPM: 602.38@6500 rpm Uncorrected
Peak Torque at RPM: 509.73@5800 rpm Uncorrected
Baseline: 08 WRX 184 whp Uncorrected
Target Boost: 25-34 psi
Target AFR: 12.0
Fuel: Shell 93, Sunco 110, Hydramist 80% water/20% Meth
Engine: Element Tuning Pro Comp Engine: OEM Block, OEM Crank, Element Tuning Forged Rods, Competition Bearings, CP Pistons, Element Big Valve Heads (+1mm SS Intake Valves, +1mm Inconel Exhaust, Upgraded Valve Springs, Bowl Blend, and Cosworth Cams). AVCS is disabled on this car.
Turbo: Element Tuning GT75 Turbo Kit.
Header: OEM
Exhaust: Element Tuning Exhaust.
Fuel System: Element Tuning Custom Fuel Rail System, UR 1280cc fuel injectors, Bosch 044 Pump, A1000 Fuel Regulator.
EMS: Hydra 2.6 Engine Management
Water Injection: Element Hydramist Water/Meth Injection
Driveline Modifications: Element Spec Clutch Masters Clutch
Suspension Modifications: Unknown

I'll fill in the blanks tomorrow.

Thanks,
Phil Grabow
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Last edited by Element Tuning; 11-13-2009 at 10:31 AM.
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Old 11-12-2009, 08:31 PM   #2
WREX88
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Member#: 166373
Join Date: Dec 2007
Chapter/Region: NESIC
Location: CT/DC
Vehicle:
2002 WRX (VF-39)
BMW 330XI

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great numbers, why no smoothing? how do you like the hydra?
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Old 11-12-2009, 08:40 PM   #3
stu
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Join Date: Oct 2002
Chapter/Region: RMIC
Location: CO springs
Vehicle:
35R bugeye
Slowbaru

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nice job phil lets see some pics
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Old 11-12-2009, 09:40 PM   #4
godforbid67
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Member#: 137168
Join Date: Jan 2007
Chapter/Region: South East
Location: ummm..... Andrewtech ftmfw!
Vehicle:
06 Built SGM WRX
35r, PPG, 280's, PSS9.

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Woof woof!
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Old 11-13-2009, 10:30 AM   #5
Element Tuning
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Member#: 54918
Join Date: Feb 2004
Chapter/Region: MAIC
Location: Gaithersburg, MD
Vehicle:
673 WHP Element
Tuning Pro Comp Engine

Default

Updated the original post for more details.

Also a trend I'm seeing with these larger turbochargers and the Cosworth cams is the engine runs better with no AVCS or very, very little. Another customer is running this GT75 setup but he has Kelford 272 cams with only 10.2mm lift and it likes AVCS and spools very quick (20 psi by 4100 rpm). I have also seen on these larger turbochargers the non AVCS Kelford 280 cams work pretty good.

This may have to do with the centerline differences between the cams as the Kelfords have more advance built in than the Cosworth cams.
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Old 11-14-2009, 06:52 PM   #6
realitysclear
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Join Date: Feb 2009
Default Thanks...Phil!

The car ran amazing to KY, it was raining the whole way so needless to say I never really got a chance to open it up. I got into it a little this afternoon and it's very strong. Thanks again for everything, you did an excellent job!
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Old 11-16-2009, 12:13 AM   #7
Chandy69
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Chapter/Region: South East
Location: Greater Miami Area
Vehicle:
02 WRX
Back seat with your mom

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Old 11-16-2009, 10:44 AM   #8
Element Tuning
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Member#: 54918
Join Date: Feb 2004
Chapter/Region: MAIC
Location: Gaithersburg, MD
Vehicle:
673 WHP Element
Tuning Pro Comp Engine

Default

Quote:
Originally Posted by realitysclear View Post
The car ran amazing to KY, it was raining the whole way so needless to say I never really got a chance to open it up. I got into it a little this afternoon and it's very strong. Thanks again for everything, you did an excellent job!
I'm glad you're finally happy! I think it's time to upgrade that suspension with so much power. It just squats so hard now!

A 10 hour drive in a 600 whp car and it rains the whole way I'm sorry that's just bad luck!
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Old 11-16-2009, 12:33 PM   #9
realitysclear
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Join Date: Feb 2009
Default

A 10 hour drive in a 600 whp car and it rains the whole way I'm sorry that's just bad luck! [/quote]

It's more than bad luck ! I'm going to the track this weekend....hopefully the suspension will hold up . I'll let you know the outcome.
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Old 11-16-2009, 06:43 PM   #10
Element Tuning
NASIOC Vendor
 
Member#: 54918
Join Date: Feb 2004
Chapter/Region: MAIC
Location: Gaithersburg, MD
Vehicle:
673 WHP Element
Tuning Pro Comp Engine

Default

Ok good luck at the track. Make us proud!

Remember I retuned the Anti-Lag in the Hydra to about 11 psi but keep an eye on it. The first time I set it up it made 20 psi in about 3 seconds.
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