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Old 02-02-2017, 12:01 AM   #1
Juantheb01
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Member#: 434435
Join Date: Nov 2015
Default 2011 STI Borg Warner EFR 9174 Build

Hello everyone,

I've been meaning to make a thread for my build for quite some time. My story is just like everyone else's - I bought the car with a 1.5XTR, and that **** quickly got boring so I started buying parts for the build.

Build list:

IAG Stage 3 Tuff Closed Deck Block:
Manley Turbo Tuff 99.75mm Forged Pistons
Manley Turbo Tuff I-Beam / ARP2000 Rod Bolts
ACL Race bearings
Standard New Subaru Heat-Treated 2012+ STI Crankshaft
IAG/ARP inch Head Studs
Cosworth 1.1mm Head Gaskets

IAG Stage V Cylinder Heads (CNC Port):
Manley Extreme Duty +1mm Exhaust Valves
Manley RaceFlo +1mm Intake Valves
Manley Beehive Springs & Titanium Retainers
Kelford 272 Cams (220-C)

Other:
Process West Street Intake Manifold
Off the line performance street series ignition coils
P&L Oil Pump Honed out 2008 STI 11mm oil pump
Killer B Pan/Baffle/Pickup
Koyo Hyper V-Series Radiator / Perrin Radiator Hoses
IAG Street Air Oil Separator
RCM / STI Kevlar Timing belt kit
IAG timing belt guide
LIC Motorsports adjustable Idler bearings
Fluidampr crank pulley
Torque Solutions Motor/Trans/Pitch mounts
IAG TGV Deletes / GrimmSpeed Phenolic Thermal Spacer 8mm
Air pump Delete / IAG Plates
Comp Clutch MPC Twin Disc Kit
NGK 1 step colder plugs
AEM Boost/AFR/oil pressure gauges
EFR Turbo speed sensor / Johnson Tuning input harness


Turbo/Exhaust:
Full Race T4 Twin Scroll Turbo Kit (Header, Up-pipe, Downpipe) DEI Titanium Heat Wrap
Borg Warner EFR 9174
Dual Tial MV-S 38mm Waste Gates
Tial Q Blow Off Valve
Cobb Intercooler Kit with 3.5 inch core
Grimmspeed 3 port EBCS
Perrin Catback

Fuel System:
Cobb Flex Fuel kit with pressure sensor
IAG Fuel Rails
Injector Dynamics 2000cc
Fore Innovations F2i Fuel pressure Regulator
Off the Line Performance Swirl Pot
MagnaFuel ProTuner 750 fuel pump
-8AN Goodridge PTFE Feed line (Splits to two -8AN lines for each rail)
-6AN PTFE Return line
-8AN Goodridge PTFE Fuel rail fuel lines
All Goodridge 811 reusable AN fittings
Fuelab 75-Micron Filter (Before the fuel pump)
Feulab 6-Micron Filter (After pump before the fuel injectors)

Tuning:
Cobb V3 Accessprt
Speed Density
AEM 5 bar MAP Sensor / IAG Adapter

I have a bunch of interior, suspension, audio, and miscellaneous stuff that I've left out for now - I'll update the list later.

Below are pictures of how full my basement was getting with parts.




Here are a few pics I have of when the engine was going back together at my buddy's house.





Sorry for the ****ty pics. I'll take some good ones.

As of now, everything is going back into the car and the base map is getting made. I promise I'll get good pictures and videos of when I start the break-in process.
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Last edited by Juantheb01; 03-01-2017 at 07:22 PM.
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Old 02-04-2017, 12:19 AM   #2
Juantheb01
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Member#: 434435
Join Date: Nov 2015
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This is the typical "before" image. Took this when I towed the car after pulling the engine.


Last edited by Juantheb01; 02-13-2017 at 01:39 AM.
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Old 02-13-2017, 09:26 AM   #3
Juantheb01
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Old 02-13-2017, 10:37 AM   #4
Waddlz
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Member#: 395275
Join Date: Jul 2014
Chapter/Region: RMIC
Location: Brighton, CO
Vehicle:
2012 STi
SWP

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jesus. what are you planning with this? lol
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Old 02-13-2017, 04:18 PM   #5
juantheb
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Join Date: Apr 2012
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:d :d :d

Last edited by juantheb; 02-13-2017 at 04:24 PM.
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Old 02-13-2017, 04:22 PM   #6
juantheb
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Member#: 315662
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Quote:
Originally Posted by Waddlz View Post
jesus. what are you planning with this? lol
It originally was going to be a nice 500whp DD, but I spiraled out of control and now I'm hoping to make somewhere in the range of 800-900whp. As of now, Itll be a weekend car - def going to take it to a lot of local Mexico meets.
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Old 02-18-2017, 09:07 PM   #7
methaddict
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Member#: 159738
Join Date: Sep 2007
Chapter/Region: SCIC
Location: SGV
Vehicle:
2004 WRB STi 620awhp
OFCD V3, FR TS, BW8374EFR

Default

I assume you opted for the lighter aluminum CHRA. Is your CD block o-ringed? Recommended if you plan to be north of 40 psi of your 800-900 awhp goals. Also did you get the speed sensor? This is my next turbo upgrade from the BW8374 EFR I'm running but waiting to max mine out first. Also don't use the integrated 3 port boost solenoid. Get the Mac 4 port and .5 bar springs in your external wastegates.
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Old 02-19-2017, 01:11 AM   #8
Juantheb01
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Member#: 434435
Join Date: Nov 2015
Default

Quote:
Originally Posted by methaddict View Post
I assume you opted for the lighter aluminum CHRA. Is your CD block o-ringed? Recommended if you plan to be north of 40 psi of your 800-900 awhp goals. Also did you get the speed sensor? This is my next turbo upgrade from the BW8374 EFR I'm running but waiting to max mine out first. Also don't use the integrated 3 port boost solenoid. Get the Mac 4 port and .5 bar springs in your external wastegates.
Yessir I did opt for the aluminum CHRA. It's a CD stage 3 tuff from IAG. I for sure got the speed sensor.

Are you running the MAC 4 port solenoid? Just wondering how well it's working for these type of applications since I don't see many people using them. The tuner chose the grimmspeed 3 port, but I'll def run the idea of using the 4 port by him. You have a build thread for your car?
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Old 02-19-2017, 07:20 AM   #9
methaddict
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Member#: 159738
Join Date: Sep 2007
Chapter/Region: SCIC
Location: SGV
Vehicle:
2004 WRB STi 620awhp
OFCD V3, FR TS, BW8374EFR

Default

Quote:
Originally Posted by Juantheb01 View Post
Yessir I did opt for the aluminum CHRA. It's a CD stage 3 tuff from IAG. I for sure got the speed sensor.

Are you running the MAC 4 port solenoid? Just wondering how well it's working for these type of applications since I don't see many people using them. The tuner chose the grimmspeed 3 port, but I'll def run the idea of using the 4 port by him. You have a build thread for your car?
I actually don't have a build thread but posted my build in the Borg Warner registry. You can check out my dyno graph in there. I didn't get a print out on my last tune @ 620 awhp / 612 ft lbs but it ramps up about the same. My end goal was to get to 750-800 awhp. I should start a build thread but didn't want to be redundant. Talk to Geoff from Full Race about the 4 port with a low spring rate in your wastegates. I think it significantly compliments the EFR turbo's spool up, perfect boost control, and transient response. I'll be definitely watching your build since it seems your the only one running this turbo in EWG. Which size turbine housing did you get? BTW use your stock fans for your Koyo rad.

Here's FR info about their 4 port:

Quote:
Full-Race 4 Port Boost Control Solenoid

Our 4-port boost control solenoid valve is designed for use in applications which target a clearly defined boost curve. Capable of improved boost response and in some cases with a soft WG spring – quicker spool The 4-port design works equally well in low boost applications as high boost. This differs from a traditional 3-port BCSV because it precisely directs pressure to the open and close ports of your waste-gate diaphragm. This allows much lower waste-gate spring pressure for better low gear boost control and perfect high gear, high boost control.

Full-Race 4 Port Boost Control Solenoid Features:
  • A soft waste-gate spring will enable much higher boost levels
  • Better spool-up and mid range power
  • Better duty cycle control
  • Solenoid is normally closed so that on failure you will run off the waste-gate spring only – to prevent over-boosting.

Last edited by methaddict; 02-19-2017 at 07:36 AM.
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Old 02-21-2017, 03:39 PM   #10
Juantheb01
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Member#: 434435
Join Date: Nov 2015
Default

Quote:
Originally Posted by methaddict View Post
I actually don't have a build thread but posted my build in the Borg Warner registry. You can check out my dyno graph in there. I didn't get a print out on my last tune @ 620 awhp / 612 ft lbs but it ramps up about the same. My end goal was to get to 750-800 awhp. I should start a build thread but didn't want to be redundant. Talk to Geoff from Full Race about the 4 port with a low spring rate in your wastegates. I think it significantly compliments the EFR turbo's spool up, perfect boost control, and transient response. I'll be definitely watching your build since it seems your the only one running this turbo in EWG. Which size turbine housing did you get? BTW use your stock fans for your Koyo rad.

Here's FR info about their 4 port:
Just saw your build post. Looks great, man! Does it pull like a freight train? Lol I have a 1.05 a/r. I did keep my oem radiator fans. I'll get some pics this weekend. I didn't have time this past weekend to work on it but perhaps this weekend I can get it fired up.

Your setup has plenty left in it right?
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Old 02-25-2017, 09:19 PM   #11
Juantheb01
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Member#: 434435
Join Date: Nov 2015
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For anyone following- timing belt is giving me the one tooth off headaches which is the only thing holding me up from dropping the motor in and firing it up. After talking to my tuner I decide to buy the process west intake manifold and the off the line performance coil packs. excited to test the coil packs with my setup.
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Old 02-27-2017, 10:25 AM   #12
Juantheb01
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Fuel setup ready to mount in spare tire well. Shoutout to Flat 4 Motorsports and Off the line performance.

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Old 03-01-2017, 05:19 PM   #13
Juantheb01
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Off the line performance street series ignition coils! They look cool... We'll see if they perform as good as they look.

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Old 03-02-2017, 06:49 PM   #14
Juantheb01
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Another piece to the puzzle came in.....

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Old 03-04-2017, 11:14 PM   #15
Juantheb01
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Finally got the motor put together and dropped in. Tomorrow I will put in all the rest of the **** that goes in the bay.


For anyone that has got their block/heads decked - get the LIC Motorsports bearing idlers. It will save you headaches. My timing belt was on 100% correctly but the cam gear lines wouldn't line up. Now it's perfect.

**i need some recommendations for powder coating places - the blue covers in my engine bay will get coated black**



Bonus: My buddy that is helping me out also has an STI. He just started his build. Look out for his thread .. Here is a pic of his car.....

Last edited by Juantheb01; 03-05-2017 at 12:33 AM.
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