FULL RACE 4 PORT MAC BOOST CONTROL SOLENOID
SKU: 73785258765

FULL RACE 4 PORT MAC BOOST CONTROL SOLENOID

Sale price$58.49 Regular price$64.99
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Ships within 48 hours · Estimated delivery Jul 5 - Jul 10

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Description

FULL RACE 4 PORT MAC BOOST CONTROL SOLENOIDFULL RACE 4 PORT MAC BOOST CONTROL SOLENOID Our 4 port MAC boost control solenoid valve is designed to target a clearly defined boost curve and improve boost responses, and in some cases with a soft WG springquicker spool. The 4 port design works equally well in low boost and high boost applications. The 4 port MAC differs from a traditional 3 port MAC BCSV (boost control soleniod valve) because it precisely directs pressure to the open and close

FULL-RACE 4 PORT MAC BOOST CONTROL SOLENOID

Our 4-port MAC boost control solenoid valve is designed to target a clearly defined boost curve and improve boost responses, and in some cases with a soft WG spring—quicker spool. The 4-port design works equally well in low boost and high boost applications. The 4 port MAC differs from a traditional 3 port MAC BCSV (boost control soleniod valve) because it precisely directs pressure to the open and close ports of your wastegate diaphragm. This allows for a much lower wastegate spring pressure for better low gear boost control and perfect high gear, high boost control. Low gear boost means more traction at launch and lower gears and higher boost at higher gears when traction is usally less of an issue. This is commonly refered to as "boost by gear"

  • MAC Part number – 46A-AA1-JDBA-1BA

FEATURES

  • Better spool-up time and mid-range power
  • Better duty cycle control to hit target boost and hold
  • The solenoid is normally closed so that on failure you will run off the waste-gate spring only – to prevent over-boosting.
  • 1/8th NPT fittings

COMPATIBILITY

  • Ideal for use in sealed Dual Port Internal WG applications, Internal or External
  • Hondata S300, K-Pro or Flashpro
  • Cobb Tuning AccessPort
  • All PWM modulated standalone and piggyback ECUs will support this 4 port BCSV!

Note: 4 Port MAC Boost Control Solenoid must be mounted upside down on B2 EFR frames. This allows the exhaust port to point towards the wastegate nipple. Use our mounting bracket. 

OPTIONAL UPGRADES

  • Full-Race Vacuum/Boost Block
  • BorgWarner EFR Wastegate Hose Kit
  • Fittings and Filter for 4 Port Boost Control Solenoid
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 73785258765

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Sherry Graber
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★★★★★ 5
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Size: Medium, Color: Pink
Check size guide before ordering. Had to return for a larger size. Overall great quality, comfortable.
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Reviewed in the United States on January 4, 2026
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dandeven
Draper, US
★★★★★ 5
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Size: Medium, Color: Black/Ivory, Size: Medium, Color: Black/Ivory
These are the cutest shirts- cotton, soft, thick- good quality but SMALL. Returned because of size and ordered a bigger size. I added a picture for reference- the other is a cotton 7-8 from Disney - I feel like the M /8 amazon was more a 6. I definitely recommend these shirts though just size up at least one size.
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Reviewed in the United States on August 20, 2025
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CCR
Fort Morgan, US
★★★★★ 5
Good value, runs small
Size: X-Small, Color: Mauve/Butterflies
Runs small. Great shirts and value otherwise.
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Robare
Charlottesville, US
★★★★★ 5
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Careem Corbett
West Palm Beach, US
★★★★★ 3
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