Mitsubishi 3-Port Boost Control Solenoid (BCS)

$ 115.00

Availability: Ships in 24 hours
Product Code: 752750

California Residents: Prop 65 Warning

Free Shipping
Maps Available


TUNING REQUIRED!! Please download the appropriate Off The Shelf Map for your vehicle or contact your Protunerin order to safely utilize this part!

The COBB 3-Port Boost Solenoid is an excellent upgrade for modern turbocharged vehicles, enabling precise boost control in a tidy package that is easy to install and tune. Our BCS will eliminate boost fluctuations inherent in OEM boost control systems, providing the necessary stable and repeatable boost control required for accurate tuning and consistent performance. The COBB BCS is equally capable of providing stable boost control at stock boost levels as well as extremely high boost levels associated with big-power builds, with an operating range of up to 120psi.

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 port 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.

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 straightforward possible. The BCS comes with a custom aluminum mounting bracket, stainless steel hardware, the necessary boost-line to complete all connections and zip-ties to route the boost-line neatly through the engine bay. The install instructions are easy to understand, with photographs and illustrations to guide you through the installation process, and include routing instructions for both internal and external wastegate configurations.

The COBB Tuning 3-Port BCS is the ultimate electronic boost control device for modern turbocharged applications, designed with outstanding boost control, engineered for consistent performance and extended service life, and configured for easy installation. Get your boost under control and Access the Potential of your turbocharged Mitsubishi today!


The COBB 3-Port Boost Control Solenoid (BCS) adds the flexibility and precision needed for properly controlling boost via the factory ECU. Many upgrades to the turbocharging system (such as larger turbochargers and external wastegates) require the increased performance, reliability, flexibility, safety and installation options that the COBB 3-Port BCS provides.

Mitsubishi 3-Port Boost Control Solenoid (BCS)
  • Accurate and Consistent Boost Control
  • Plug and Play 18-Gauge Wiring Harness
  • 1/8" Nickel Plated Barbed Fittings
  • Rated up to 120psi
  • Custom Aluminum BCS Mount

Customer Photos

Mitsubishi 3-Port Boost Control Solenoid (BCS) is rated 4.7 out of 5 by 24.
Rated 5 out of 5 by from Simple install and works great! Installed it in under 10 minutes. Flashed it with the OTS stage III map and noticed a nice improvement over stage 2. Holds boost a lot longer and no longer over boosts like it did previously. Got a pro tune and it's even better than before. Nice clean install too. Cobb was very fast to process and ship the order. Very satisfied.
Date published: 2014-07-21
Rated 5 out of 5 by from Great boost controller! I purchased this for my ralliart and I couldn't be any happier! Shipping was fast, packaging was top notch, and it came with all the hardware needed for install. (And stickers!) Vehicle response has improved drastically, definatly recommend Cobb to anybody looking for a ebc.
Date published: 2016-05-30
Rated 1 out of 5 by from Not happy to be honest I am happy that i bought an upgraded boost control solenoid. Seems like a solid, quality part. I'm not happy about map and performance outcome. I have gained no boost since install of ebcs and stage 2 map tune. Cobb claims i should be hitting up to 21psi give or take. I maxed out at 19psi and believe me... I tested it over and over again. I am willing to offer the benefit of the doubt and say it could be my cheap oem Ralliart bov leaking or boost pipe leaking but i have yet to find that leak. Hopefully things will change once i swap bov and piping out for some better parts. Honestly i think i lost power after going stage 2. Good part from what i have heard and now seen. Can't complain yet. Not until i find a boost leak or don't find a boost leak
Date published: 2017-01-20
Rated 5 out of 5 by from Easy install! I bought this less than a week ago before I got my protune. The install of the actual COBB 3-Port took no more than 10 minutes. The longest part of the install was fixing the wiring the previous owner and cut, spliced, and butt connected together. But once all was done and re-flashed with COBB Stage 3 the car ran well and no over boosting or other problem.
Date published: 2015-09-16
Rated 5 out of 5 by from Does it's job Not sure how to review something as simple as this controlled leak but it does it's job and easy to tune simple install and this is my second 3 port and the quality of the hose that is supplied has gotten better since my last evo. Thank you and fast shipping when you need it right away next day
Date published: 2018-05-13
Rated 5 out of 5 by from Power! Bought it the week before hitting HPDE, and for only $100 to get an extra 40 bhp is a pretty sweet deal. I had a shop install it, mapped w/ Stage 3 OTS, and the results are pretty amazing. The Evo pulls pretty aggressively now and just flies up the rpm band. Takes some getting used to; having to shift faster than I'm accustomed and needing to watch my speed b/c 75 mph comes up very fast. On the track, however, it works perfectly for instant passing and corner exits.
Date published: 2016-04-13
Rated 3 out of 5 by from Great tune after install, wrong configuration sent I purchased this boost controller for my Evo X, but what I received appears to be the unit for the WRX. The bracket wasn't the one pictured and the plug was the wrong shape. After filing off some prongs on the plug, I managed to get it installed, but it still isn't what I expected to have to do after paying so much money for such a small device.
Date published: 2016-06-09
Rated 5 out of 5 by from Cobb 3 port BCS Bought this for my 2012 Ralliart, def notice some more gains in the upper RPM's and more power after loading the stage 3 tune. Install was a breeze, however taking off the hose adjacent to the turbo was a pain in the but! Will worth the time and $!
Date published: 2014-09-15
  • y_2019, m_8, d_22, h_1
  • bvseo_bulk, prod_bvrr, vn_bulk_2.0.13
  • cp_1, bvpage1
  • co_hasreviews, tv_3, tr_21
  • loc_en_US, sid_752750, prod, sort_[SortEntry(order=RELEVANCE, direction=DESCENDING)]
  • clientName_cobb
  • bvseo_sdk, p_sdk,
  • CLOUD, method:getContent, 20.97ms