AMS Performance 4 Port Boost Control Solenoid Kit – for Alpha R35 GTR Turbo Kits

The AMS Performance 4 Port Boost Control Solenoid Kit makes installing your Alpha turbo kit easier than ever. Everything you need to set up your boost control like a pro!


In Stock


SKU ALP.07.14.0017-1 Categories , , Brand:

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Additional information

Weight 3 lbs
Dimensions 12 × 8 × 5 in

CARB And / Or EPA Compliance Testing Not Completed

While we believe this product is either CARB EO exemption applicable, or complies with the EPA's Anti-Tampering Policy, we have not completed the required testing and administrative process at this time. This product is not available to purchase for emissions-controlled vehicles located within the state of California, or available to ship to California addresses, without a completed AMS Race Waiver form. International users outside of the United States should act in accordance with their local laws and regulations.

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With 23 years of documented research and development in the forced induction field, AMS Performance has proven itself as the powerhouse in the automotive aftermarket. Our award winning performance systems are what all others are measured by.

When installing a new turbo system to your GTR, you will need a more effective method to control higher boost levels than stock. Allowing for much higher resolution than the factory solenoid, this kit will allow boost to be controlled to a much finer degree. We designed this BCS kit to be as robust and high quality as possible while still being simple to plumb and install.

Allowing for a wider range of peak boost control, the 4 port boost control solenoid is the preferred kit for “max effort” tuned GTRs using the stock ECU. Unlike the 3 port solenoid that only adds pressure to the top port of the wastegate and leaves the bottom port connected to a boost pressure source, the 4 port solenoid will reduce pressure at the bottom port while simultaneously adding pressure to the top port, effectively increasing your spring pressure and maximum boost level possible even with high exhaust manifold back pressures. With the added effective spring pressure a 4 port solenoid delivers, it will allow for a much lower pressure spring to be used inside the wastegate, achieving a lower minimum boost level without sacrificing higher boost level control.

*NOTE* While the 4 port BCS does allow for a wider range of boost levels to be controlled with 1 solenoid, there is a substantial loss in control during normal driving conditions. For this reason, we only suggest the 4 port BCS to be used on dedicated racing applications, and not on vehicles where daily drivability is a concern.


Kit Includes

  • 4 Port MAC Valve
  • All Necessary Vacuum Line, Fittings, Wiring, and Mounting Hardware


  • 2009+ Nissan R35 GT-R
  • Fits all USDM, JDM and European Models (LHD & RHD)

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