EQ - 06 STI, 20G - Aggressive 91 Octane Tune - 350whp/380ft-lbs!

[Equilibrium Tuning]

It's always fun when a customer comes in and tells me to push the setup to the limits and beyond without caring about engine longevity. After discussing the risks and plans, this customer asked me to push 24psi on this setup. The stock engine has nearly 100k miles on it with the last ~30k running this setup at about 20psi. It was still running strong but he is planning on building it soon anyway so he wanted to see what was possible with a very aggressive tune on California 91 Octane. We went ahead with the tune and the results are pretty awesome.

Event: Custom Tune/Dyno
Location: Equilibrium Tuning - Fairfield, CA
Ambient Temp: 70 degrees Fahrenheit
Elevation: ~100ft above sea level

Car: 2006 Subaru STI
Tuner: ED @ Equilibrium Tuning
Peak HP at RPM: 350whp @ 5900RPM
Peak Torque at RPM: 380ft-lbs @ 4500RPM
Target Boost: 24psi peak tapering to 20psi
Fuel: Cali 91 Octane

Engine/Power Modifications:

Catless TBE
EL Headers
KSTech 73mm Intake
TMIC
Five-O 850cc Injectors
EWG
Hallman MBC
Custom Tune







*** 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 - 210-220whp
Stock 08-11 STI - 195-205whp

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

Thanks
-- Ed

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[hunteragp]

Those are great numbers for that setup and 91 Oct. Your customer doesn't want to run meth? I hope the engine lasts...

[Phatron]

he realizes that blowing the motor could possibly cost him thousands and thousands more than if he were to build it right now?

[Equilibrium Tuning]

Originally Posted by Phatron

he realizes that blowing the motor could possibly cost him thousands and thousands more than if he were to build it right now?

It won't cost that much more. He's already planning on using a new case and crank so no added cost as long as the heads don't take a beating. You know with the stock motor all that really happens are cracked ringlands which generally don't cause any other real harm.

-- Ed

[Equilibrium Tuning]

Originally Posted by hunteragp

Those are great numbers for that setup and 91 Oct. Your customer doesn't want to run meth? I hope the engine lasts...

Yep... its a good experiment to see how long it can hold up like this.

-- Ed

[Phatron]

send him to the track i wanna see some 118mph traps on a 91 oct 20g!

[07pearlwht]

Which 20g is this?

[hunteragp]

Originally Posted by Equilibrium Tuning

Yep... its a good experiment to see how long it can hold up like this.

-- Ed

I'm very interested in this. Please update us on the status of that engine if something happens. I would like to see how many miles it lasts! Also I would love to see what that beast does at the track! Is that a Blouch 20g?

[flycaster]

Originally Posted by Phatron

...on a 91 oct 20g!

Good numbers on Cali 91!

[Eisenbergs blue boo]

What's the afr looking like

[Equilibrium Tuning]

Originally Posted by Eisenbergs blue boo

What's the afr looking like

10.9-11:1

A bit leaner than I normally tune, but I kept timing pretty relaxed.

Car has been running for about 2 weeks now

-- Ed

[Boostises]

I'll be visiting you guys soon. But I want mine to last

[ArSoN9]

Wow great numbers Ed, Id like to see the timing tables to see how much ur holding out till redline..and how quick did you see the boost taper down to 20psi? It looks like it dropped out pretty quick, what TMIC did the customer have on?

What will go first @ 24psi and 100k+ miles, Turbo or motor?

[Kastley85891]

Great result on piss water, must have a really smart timing curve to hold that boost initially, clever tuning, bet it rips

[karmasi16]

20G's are great.. I hear the Synergy turbo 20g-8cm turbos make that type of power off pump gas.

[ArSoN9]

Is this on a 20g turbo? I must have missed that post I thought this was a aggressive stock turbo tune

[Phatron]

Read title of thread

[SoCal_Scooby]

how much power was it making off the first 20psi tune?

[Equilibrium Tuning]

Originally Posted by SoCal_Scooby

how much power was it making off the first 20psi tune?

About 325whp/330ft-lbs.

-- Ed

[Equilibrium Tuning]

Originally Posted by ArSoN9

Is this on a 20g turbo? I must have missed that post I thought this was a aggressive stock turbo tune

You could only get these kinds of numbers out of the stock turbo on E85 on our dyno.

-- Ed

[ArSoN9]

Yeah sorry need to read the title much more closely...I knew something wasnt right when I asked the first time

[Evo_Kid]

Any updates? Has this thing gone to the track yet?

[Equilibrium Tuning]

Originally Posted by Evo_Kid

Any updates? Has this thing gone to the track yet?

No I heard he crashes it and broke a wheel and some suspension. Getting repaired now. The motor is still running though .

-- Ed

[subysportSTI]

Originally Posted by Equilibrium Tuning

No I heard he crashes it and broke a wheel and some suspension. Getting repaired now. The motor is still running though .

-- Ed

Ed,

Any updates? Hope this guy had better luck than me lol. A few years ago i installed a 35r/supporting mods on my 06 sti(stock longblock). Drove to CO on a limo map and dynoed 425/380 on 91. About a month later piston #3 exploded; broke through the cylinder wall, bent valves and chunks of piston in the turbo. Look me up in ppb to see pics of the carnage.

Its back up and running now with a donor motor and a 20g. Can you do an open source tune via email? Thanks
Paul

[achavez]

Op sold the car last year shortly after. Last word on the forums its still running strong with new owner; as of a few months ago