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Old 01-23-2017, 03:01 PM   #1
BrenTuning
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Join Date: Jul 2011
Chapter/Region: NESIC
Location: Metrowest Boston
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508 -762-1769
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Default BrenTuning 2015 STi | Stock engine | Dom 3.5XT-R | KillerB | Grimmspeed

Event: Dyno
Location: BrenTuning -- Charlton, MA
Ambient Temp: 45*
Elevation: ~900
Car: 2015 STi
Tuner: BrenTuning
Dyno Info: Mustang MD150 AWD
Transmission: 6MT
Gear: 3RD
Peak HP at RPM: 400.5 @ ~6300
Peak Torque at RPM: 370 @ ~4700 (earlier in 4th or on street)
Baseline HP/TQ for a stock 2015 STi: 240/240
Target Boost: ~20
Fuel: 93 Oct + Meth for cooling (not for tuning/power)

Engine/Power Modifications:
- Stock engine/Clutch/Trans/Mounts/Suspension 18K miles
- Blouch 3.5XT-R
- KillerB 2 bolt header Swaintech coated
- Grimmspeed thermal coated DP
- Grimmspeed TMIC Thermal coated w/ y-pipe kit
- ETS "Quiet" Catback
- Perrin 3" inlet
- IAG TGV
- ID1000
- Cobb stumble kit
- IAG Street AOS
- Cobb EBCS
- AEM 320 Pump
- AEM Meth in factory washer reservoir for cooling only

Figured I'd post this car up based off of customer feedback -- it has garnered a lot of attention on our FB/IG. Customer contacted looking to maximize the stock engine until he can go rotated/closed deck, this should hold him off for a little while . This setup is designed around the factory engine to maximize the OEM powerband. Power on the street comes on fast, while obviously it does come on slower than stock, it almost always is making the same TQ (and more) as the VF48. This is on 93 pump with an AEM meth kit (mounted in the front bumper and utilizing the factory washer tank) used for cooling only, not power production. Car made 360WHP on the internal gate it came with, we left it at a very gentle 20PSI for stock engine/clutch longevity. I have basically the same setup on a built engine, stock heads, 93/meth doing 510WHP driven incredibly hard for the past 1.5 years. It really is a great turbo.

Contact:

Email: [email protected]
Phone: 508-762-1769
Instagram: @brentuning
Facebook: Facebook.com/brentuning













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Last edited by BrenTuning; 01-23-2017 at 04:06 PM.
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Old 01-23-2017, 04:39 PM   #2
taxkourel
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Default

Very nice powerband/car. Question: it seems that the 3.5xtr is a very good match for an ej255 with stock heads. Why not a dom4? How much later do you think it would spool? Would u need upgraded cams to rev it higher? Nice work on this one though.
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Old 01-23-2017, 05:10 PM   #3
BrenTuning
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Default

Quote:
Originally Posted by taxkourel View Post
Very nice powerband/car. Question: it seems that the 3.5xtr is a very good match for an ej255 with stock heads. Why not a dom4? How much later do you think it would spool? Would u need upgraded cams to rev it higher? Nice work on this one though.
Thank you. It's a great option for stock heads, personally I would like a little more rev out of the engine it goes in, 7500 is perfect for this turbo. I think if you go bigger than this you really should just go rotated.

Chris
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Old 01-23-2017, 05:59 PM   #4
Harey
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Vehicle:
'15 Foz XT & GT86

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Quote:
Originally Posted by BrenTuning View Post
Thank you. It's a great option for stock heads, personally I would like a little more rev out of the engine it goes in, 7500 is perfect for this turbo. I think if you go bigger than this you really should just go rotated.

Chris
Nice setup, agreed about the wider powerband. Would be good to get it over 3000rpm. Those Killer B headers with the white coating look unreal!

Have you tuned any Killer B spoolinator kits? Their lack of dump pipe and up angle really impresses me and look to be better than most rotated kits. Although the downside is that they are limited to a 3" intake as it still goes under the intake manifold.
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Old 01-23-2017, 06:06 PM   #5
Frank 17 STI
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Do you feel an EWG set-up would benefit the car?
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Old 01-24-2017, 09:52 AM   #6
BrenTuning
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508 -762-1769
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Default

Quote:
Originally Posted by Harey View Post
Nice setup, agreed about the wider powerband. Would be good to get it over 3000rpm. Those Killer B headers with the white coating look unreal!

Have you tuned any Killer B spoolinator kits? Their lack of dump pipe and up angle really impresses me and look to be better than most rotated kits. Although the downside is that they are limited to a 3" intake as it still goes under the intake manifold.
We haven't seen the spoolinator kit in house, not sure how many are running around with that kit, only seen a few on the forums since its release.

Quote:
Originally Posted by Frank 17 STI View Post
Do you feel an EWG set-up would benefit the car?
Not at these power levels, I have this turbo on 28/29LBS and it's helpful there.

Chris
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Old 02-18-2018, 04:52 PM   #7
Blue STI
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2017 Subaru STI
450whp 3.5xtr Turbo

Default 3.5xtr turbo sti

How's this setup holding up on the stock motor?
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Old 02-19-2018, 01:02 AM   #8
silversurfer05
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Location: broward county, Florida
Vehicle:
2009 09 wrx delivery
Dgm

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Can i ask what or how you can use meth to only cool( assuming thats for longevity) or use it to make extra power? Is it nozzle placement or?
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Old 02-19-2018, 03:22 PM   #9
BrenTuning
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508 -762-1769
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Default

Was running great 1 month ago which is the last time I talked to the customer. Meth for cooling, yes.
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