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COBB Tuning 3-Port Boost Control Solenoid

MODEL # COB 712750
Manufacturer Part # 712750

$115.00

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Description
The COBB 3-Port Boost Solenoid (BCS) is an excellent upgrade for modern turbocharged vehicles, enabling precise boost control in a tidy package that is easy to install and tune. This BCS will eliminate boost fluctuations and boost creep inherent in the OEM boost control system, providing stable and repeatable boost control to base the vehicle's tune on. It is equally capable of providing this stable boost control at stock boost levels as well as extremely high boost levels associated with big-power builds.

The COBB Tuning 3-Port BCS features 1/8" low-profile barb fittings to keep the unit compact and are nickel coated for corrosion resistance. Optional 1/4" nickel plated fittings are also available separately. Viton spools and seals are used throughout for long life and lubricated with Dow Corning silicone grease. The manual override is sealed with an O-ring, the wiring harness is sealed to the casing using a waterproof grommet and the solenoid wires are ultrasonically welded to the coil, making the device waterproof and safe to wash. The BCS is rated to operate up to 120psi.

COBB Tuning has made the COBB 3-Port BCS installation as simple as possible. It mounts in the stock location and plugs directly into the stock wiring harness, making the physical install and electrical connection as simple as possible. The BCS comes with a custom aluminum mounting bracket, stainless steel hardware, boost-line to complete all connections and zip-ties to route the boost-line neatly through the engine bay. Installation Instructions are provided, are easy to understand, and provide routing instructions for both internal and external wastegate configurations.
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RallySport Guarantee - 30 Days


Items that are covered under the RallySport Guarantee offer a 30 day no questions asked return policy.

RallySport Guarantee items may be returned within 30 days of the original invoice date and must include all the original parts and contents for a refund.

The RallySport Guarantee does not apply to products that have been modified, damaged, misused or abused. All returns require an RMA (Return Merchandise Authorization) Number, and freight charges are strictly non-refundable. For more information regarding our freight refund policy, please refer to our return policy page found HERE.


SPECIFICATIONS

Brand: COBB Tuning
Adjustable: Yes
Color: Blue
Number of Ports: 3
OEM Replacement: Yes
QTY: 1
Tuning Required: Yes
Mfgr. Warranty: 1 Year
Return Policy:

RallySport Guarantee - 30 Days


Items that are covered under the RallySport Guarantee offer a 30 day no questions asked return policy.

RallySport Guarantee items may be returned within 30 days of the original invoice date and must include all the original parts and contents for a refund.

The RallySport Guarantee does not apply to products that have been modified, damaged, misused or abused. All returns require an RMA (Return Merchandise Authorization) Number, and freight charges are strictly non-refundable. For more information regarding our freight refund policy, please refer to our return policy page found HERE.
RallySport Guarantee

5

5 STAR
97%
4 STAR
3%
3 STAR
2 STAR
1 STAR
Verified Purchase

Inexpensive upgrade
adsmedley200900117 2 months ago
Eliminated some overboosting, easy to install and will become more useful when pro tuned
Verified Purchase

COBB Tuning 3-Port Boost Control Solenoid
3 months ago

Verified Purchase

Cobb
Thomas 3 months ago
This was way easy to install and work got my tune right after I installed and works perfectly.
Verified Purchase

Precise, Solid Boost Control With Fun Wooshy Sounds
mstrnlkr 7 months ago
I recently purchased this boost controller along with the Cobb AccessPort V3 stage 1 package (with Cobb drop-in filter) for my 2002 WRX. I used to have boost hunting issues on the car, especially on colder days. I would see a slight overboost followed by wastegate pressure followed by another overboost followed again by wastegate pressure. The car could never precisely dial in to its target boost pressure, so I was on a wild goose chase looking for leaks in the system. After installing the Cobb air filter, AccessPort (with Stage 1 91oct +ebcs map), and the 3-port EBCS (a surprisingly easy 30 minute install), there is a night and day difference in boost control. I am consistently hitting target boost on the nose with no fluctuations. This is, without a doubt, one of the best mods I have installed on this car. I absolutely love it. I don't know if it's the new Cobb filter, the EBCS, or a combination of the two, but the spool and blow off sounds are noticeably clearer and more present now. Everybody likes turbo sounds! Anybody looking to move from stock to stage 1, 2, or beyond should absolutely consider spending the extra dollars for this 3-port solenoid.
Verified Purchase

Really should have bought this a long time ago.
SilverScotty 7 months ago
Easy install with the new hose included. Once you remove your stock solenoid and look at the two you will know you made the right choice. One looks like a toy, and the other like a well designed and machined purposed built item. Since installing this I haven't seen boost fluctuate on my AccessPORT by more that 0.2 psi under numerous WOT pulls. Honestly one of the best $100 investments I've made for my WRX. It can handle any future mods I will ever want to go for as well.

  • Q: 2005 XT without accessport   joshvester23791 3 months ago

    Answer

    Hello! I have a 2005 Subaru Forester XT with a Cobb airbox, etc, but NO accesport. I e been having boost fluctuation issues and have narrowed it down to my boost solenoid, and want to go Cobb over oem. Would I need an accessport for a shelf map, a custom tune, or would I be able to run this solenoid without a tune? Cheers!


    • A: You would need a customer tune for this BCS, Cobb may also offer some maps that support this specific boost control solenoid depending on the vehicle.


      Tyler.G 3 months ago
  • Q: 2002 WRX  garrettcrane376451 6 months ago

    Answer

    Im going EWG and I'm wondering if i can just buy this. i noticed you had an EWG add on, and wasn't sure if i had to include that too.


    • A: If running this with an EWG setup you will want to run 1/4 inch fittings instead of the 1/8 inch fittings which is what the EWG kit does. It converts the 1/8in fittings to 1/4in fittings for better control of external wastegate setup.


      Tyler.G 5 months ago
  • Q: 2006 WRX  Fernando C. 6 months ago

    Answer

    If I buy this and the v3 accessport and run stage 1 will I have to have it pro tuned? Or will running stage 1 be enough?


    • A: COBB Does list an EBCS map available for download on their website which would have to be used with this EBCS.


      Stevens Henager 6 months ago
  • Q: What map should I run?  michaelaaustin073196 7 months ago

    Answer

    I have a 2012 WRX base model which only has a magnaflow exhaust system on it. What map should I run on my Cobb v3 to get a good tune out of it or will I need a pro tune?


    • A: COBB Does not have an EBCS map for your vehicle and you would need a pro-tune.


      Nick S. 7 months ago
  • Q: Cobb solenoid  Oh_no_sti 7 months ago

    Answer

    How is this solenoid adjustable when I installed it its pushing 26 psi and hitting peak how do I adjust t ?


    • A: Being an electronic unit all adjustments would have to be made through the ECU in tuning.


      Nick S. 7 months ago
Subaru Forester
XT 2004, 2005XT Premium 2005XT Limited 2006, 2007, 2008Sports 2.5 XT 2008
Subaru Impreza
WRX 2002, 2003, 2004, 2005, 2006, 2007WRX STI 2004, 2005, 2006, 2007WRX TR 2006, 2007WRX Limited 2006, 2007WRX STI Limited 2007