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Old 03-23-2012, 04:56 PM   #1
Equilibrium Tuning
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Member#: 26933
Join Date: Oct 2002
Chapter/Region: BAIC
Location: Fairfield, CA
Vehicle:
2006 STI
CGM

Default EQ - 2010 STI - EQ Stage 2 Block and Heads, ATP GTX3071, TMIC, 91 Octane

This is a car we built recently. He just finished the break-in and came in for the final tune:


Event: Custom Tune/Dyno
Location: Equilibrium Tuning - Fairfield, CA
Ambient Temp: 75 degrees Fahrenheit
Elevation: ~100ft above sea level

Car: 2010 Subaru STI
Tuner: ED @ Equilibrium Tuning
Peak HP at RPM: 338whp @ 6350RPM
Peak Torque at RPM: 335ft-lbs @ 4200RPM
Target Boost: 20psi
Fuel: Cali 91 Octane

Engine/Power Modifications:

EQ Stage 2 Shortblock
EQ Stage 2 Heads (stock cams and valves)
ATP GTX 3071 Turbo with integrated EWG
Process West TMIC
Perrin 3" Inlet
AMR Big MAF CAI
Tomei UEL Headers + UP
TBE
EQ 1000cc Injectors
Walbro Fuel Pump
EQ Custom Tune on 91 Octane





This is the first experience I've had with the GTX3071. It seems to make similar power to the GT3076 with slightly better spool. On the street we saw 20psi by 3800RPM in 3rd gear. The car drives very nicely and response feels great all around. Next up is 100 octane or E85 .

*** Standard Dyno Chart Disclaimer ***

This dyno reads low and should be compared to the lower reading mustang dynos. Here are some proven numbers and trap speeds for reference:

Stock 02-05 WRX - 155-165whp
Stock 04-07 STI - 215-220whp
Stock 08-11 STI - 190-200whp

265-275whp - 107-108mph traps
300-310whp - 112-113mph traps
325-335whp - 115-116mph traps
350-360whp - 118-120mph traps

Thanks
-- Ed
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Old 03-23-2012, 05:38 PM   #2
bilt2run
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Join Date: Dec 2006
Location: LONG ISLAND
Default

Finally gtx3071 numbers!! and from a reputable tuner none the less..Just as we all suspected,basically gt30r power curve and nice to see a possible decrease in spool...
nice job again
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Old 03-23-2012, 06:04 PM   #3
reid-o
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Join Date: Dec 2005
Location: Mililani, Hawaii
Vehicle:
2004 STI
Black

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Were there diminishing returns as you turned the boost up?
It makes sense that it performs like a 3076. I don't have experience with 91 to know what a reasonable pressure ratio is.
I'd convert from my 3582 if I could get that boost threshold and crack 400 on stock cams on 92.
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Old 03-23-2012, 09:31 PM   #4
Equilibrium Tuning
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Location: Fairfield, CA
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2006 STI
CGM

Default

Quote:
Originally Posted by reid-o View Post
Were there diminishing returns as you turned the boost up?
It makes sense that it performs like a 3076. I don't have experience with 91 to know what a reasonable pressure ratio is.
I'd convert from my 3582 if I could get that boost threshold and crack 400 on stock cams on 92.
I generally don't run over 20-21psi on 91 Octane. I'm sure it could have made more with more boost, but timing would have to be a lot lower and EGT's would start to get pretty hot. I don't see any reason this turbo couldn't hit 420-440whp on good gas.

-- Ed
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Old 03-23-2012, 10:32 PM   #5
Kastley85891
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Location: TX/Austin
Vehicle:
2013 Hybrid
Needs an 05STI

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Needs some E to spank that wagon you tuned ;-)
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Old 03-23-2012, 11:34 PM   #6
reid-o
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Quote:
Originally Posted by Equilibrium Tuning

I generally don't run over 20-21psi on 91 Octane. I'm sure it could have made more with more boost, but timing would have to be a lot lower and EGT's would start to get pretty hot. I don't see any reason this turbo couldn't hit 420-440whp on good gas.

-- Ed
What was timing at peak torque and redline like?
I normally like the bigger turbine wheel, but Im getting older and prefer to shift less.
The gtx3576 is ridiculously priced and is not even being considered.
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Old 03-24-2012, 04:10 PM   #7
b1aze
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Location: Marlborough, MA
Vehicle:
2010 Alpine 135i

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Any reason you didnt go rotated? Ive been looking into a rotated setup and keeping the stock sti TMIC and keeping it super conservative till i break cyl4.
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Old 03-26-2012, 10:46 AM   #8
Equilibrium Tuning
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Location: Fairfield, CA
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2006 STI
CGM

Impreza GC8

Quote:
Originally Posted by b1aze View Post
Any reason you didnt go rotated? Ive been looking into a rotated setup and keeping the stock sti TMIC and keeping it super conservative till i break cyl4.
The stock location turbos of this size perform very similarly to the rotated variants. Stock location keeps things simpler and makes it much easier to smog the car.

-- Ed
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Old 03-26-2012, 10:48 AM   #9
Equilibrium Tuning
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Member#: 26933
Join Date: Oct 2002
Chapter/Region: BAIC
Location: Fairfield, CA
Vehicle:
2006 STI
CGM

Default

Quote:
Originally Posted by reid-o View Post
What was timing at peak torque and redline like?
I normally like the bigger turbine wheel, but Im getting older and prefer to shift less.
The gtx3576 is ridiculously priced and is not even being considered.
I believe it's runing 10* on spool up to 17* by redline.

Thanks
-- Ed
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Old 03-26-2012, 03:12 PM   #10
Imprezd
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Good to see someone make easy power and just stop. Nice results!
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Old 03-27-2012, 07:01 PM   #11
Schister66
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Location: Bloomington, MN
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Steel Grey Metallic (26D)

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I've been waiting for a dyno of the GTx3071r. I'm really excited to see the results on E85
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Old 03-28-2012, 06:52 PM   #12
Equilibrium Tuning
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Member#: 26933
Join Date: Oct 2002
Chapter/Region: BAIC
Location: Fairfield, CA
Vehicle:
2006 STI
CGM

Default

Quote:
Originally Posted by Imprezd View Post
Good to see someone make easy power and just stop. Nice results!
Thanks!

No point in pushing things beyond the limit on a brand new expensive engine and crappy inconsistent California fuel!

-- Ed
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Old 03-30-2012, 08:16 PM   #13
Drew888
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Location: Orange County, SoCal.
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2008 LGT Spec-B stg4
Delicious Tuned 336/336

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Ed, any updates? Any chance he'll be back in for an E85 map?
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Old 03-30-2012, 09:51 PM   #14
Equilibrium Tuning
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Join Date: Oct 2002
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Location: Fairfield, CA
Vehicle:
2006 STI
CGM

Default

Only update is that he beat a new Mustang 5.0 with cams, headers, exhaust, intake, and tune... supposedly they do about 500bph with those mods but I have no idea how much it was actually making.

He will need larger injectors for E85 on this turbo. I know he plans on doing it eventually but he's just enjoying this for now.

-- Ed
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Old 03-30-2012, 11:23 PM   #15
jdpsearcher
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On e85 do you think 450-475 is a safe power estimate at the wheels?
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Old 04-02-2012, 08:18 PM   #16
Equilibrium Tuning
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Join Date: Oct 2002
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Location: Fairfield, CA
Vehicle:
2006 STI
CGM

Default

Quote:
Originally Posted by jdpsearcher View Post
On e85 do you think 450-475 is a safe power estimate at the wheels?
I would expect around 420-430whp on E85 on our dyno... that's nearly 500whp on a Dynojet or other higher reading dynos.

Thanks
-- Ed
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Old 07-20-2012, 07:39 PM   #17
Equilibrium Tuning
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Join Date: Oct 2002
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Location: Fairfield, CA
Vehicle:
2006 STI
CGM

Default

bump... this is the same car in the other thread with E85... It looks like it beat my expectations a bit

-- Ed
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