SKU: 96067308986
ms3 gold box boost control

ms3 gold box boost control GrimmSpeed MazdaSpeed3 Boost Control Solenoid

Sale price$23.45 Regular price$26.05
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Ships within 48 hours · Estimated delivery Aug 15 - Aug 20

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Description

ms3 gold box boost control GrimmSpeed MazdaSpeed3 Boost Control SolenoidThe MOST COMPLETE AND BEST PERFORMING MazdaSpeed BCS Ever Built, Period. Get into Boost Much Quicker (Flows 10% more than competition) Plug and Play into OEM Harness (no splicing wire like other BCS!) Factory Fit for clean install Works Safely with Factory Mazda ECU (custom coil to match ECU) Nickel Plated Fittings as this is Built To Last (not the easily breakable plastic fittings!) Easy to Install and Very Easy to Tune The Only Direct Bolt IN BCS

The  MOST COMPLETE AND BEST PERFORMING MazdaSpeed BCS Ever Built, Period.

  • Get into Boost Much Quicker
    (Flows 10% more than competition)

  • Plug and Play into OEM Harness
    (no splicing wire like other BCS!)

  • Factory Fit for clean install

  • Works Safely with Factory Mazda ECU
    (custom coil to match ECU)

  • Nickel Plated Fittings as this is Built To Last
    (not the easily breakable plastic fittings!)

  • Easy to Install and Very Easy to Tune

  • The Only Direct Bolt-IN BCS for MS3


The GrimmSpeed™ MazdaSpeed3 Boost Control Solenoid is designed to work with your factory computer (requires tuning). It will not reduce the life of your factory computer because it is designed to draw the same ammount of power as the factory BCS but flows better and reacts faster. It plugs in and requires no splicing or soldering of resistors. With the included bracket you can bolt it in, plug in the connector, and start tuning for fast boost response, increased boost pressure and free up lots of power. Planning on returning the car to stock? Just reverse installation.

Why run an Electronic BCS over a Manual Boost Controller?
A MBC allows you to run higher than stock boost levels by preventing the wastegate from opening at its rated pressure. It does a great job at this but if boost is available under the MBC setting it will give you that full boost. So for instance, you set your MBC to 18psi because from 3000-6000rpm thats what you want. But then say you get detonation with 18psi when you are at 7000rpm unless you are below 16psi. With a MBC, you do not have this control so you are forced to run 16psi through the entire rev range. With an electronic boost controller you could run 18psi from 3000-6000 and 16psi at 7000rpm because you can tune the boost map in the ECU which will allow you to run the maximum amount of boost at every given rpm. This gives you more power throughout the range and better control. Revolutionizing the boost solenoid market, we have created model specific install brackets that allow you to directly fit our Boost Solenoid into your MS3 for a factory fit. No more Zip-tying! We give you the factory fitment you have been waiting for.

Staying with the OEM fitment theme, our Boost Solenoid uses a Mazda style wiring harness so you can simply unplug your OEM solenoid and plug ours in. No more cutting the oem wiring and crimping wires together!

Also new to the Mazda boost solenoid market, we have used ultra low-profile hose fittings to keep the unit as small and clean as possible. The hose fittings are nickel plated brass so you don't have to worry about them snapping off like the plastic hose fittings!

More Features:

  • Users can use AN fittings with the solenoid.
  • MAC Valve has completely custom made the valve for us(only MAC valve on the market to be custom made for automotive tuning use).
  • Specifically designed by GrimmSpeed™ to work safely with the factory Mazda ECU (requires tuning) and to reliably handle the vibrations and temperatures of your engine bay!
  • Direct bolt in mounting bracket and hardware included!
  • Faster response and greater flow than any other valve out there. (by more than 10%!)
  • Nickel plated brass fittings. (unlike the competitors failure prone plastic fittings)

Easy for your shop or tuner to tune!(Engine tune is required!)

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: 96067308986

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Jamie
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★★★★★ 5
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Color: White, Number of Items: 1, Color: White, Number of Items: 1
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Reviewed in the United States on January 28, 2026
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Junior Photog
New York, US
★★★★★ 1
Seller Stall Tactics
Color: White, Number of Items: 1, Color: White, Number of Items: 1
My chair arrived last Wednesday, but I only assembled it today. It looks overwhelming as you take all of the pieces out of the box, but it is straightforward to assemble. Took me less than 45 minutes start to finish. Assembled, the chair is really nice. Many reviews talk about the incessant squeaking. I'm guessing it has to do with how they assembled the chair. Mine does not make a sound. The seat is very firm, it may be uncomfortable for some people; I'll have a better idea after I use it for awhile. I gave it 4 stars because the plastic lever to raise/lower the chair, the underside broke off in 3 pieces! Fortunately I was able to fit the pieces back, and used liquid Gorilla Glue all over the broken seams. So far it's holding up well. Visually the chair is beautiful. UPDATED 6/1/20 - I originally gave this chair 4 stars. As you can see in my original post, I took one star off for a crucial piece that was broken inside the box. I read reviews where customers who experienced issues were not getting assistance from the seller. I am now in that same issue. After I initially e-mailed the seller regarding a replacement part for that one piece, they are repeatedly e-mailing me asking me is this part broken, is that part also broken. My last e-mail to them stated that I have explained the issue in detail multiple times and if I am sent one more e-mail asking if another part is broken, I will know this is a stall tactic. I have an e-mail this morning asking if the gas lift is broken. I've contacted Amazon to contact the seller with the understanding that if they stall Amazon as well, a request will be made for a full refund. I am NOT the one to play with when it comes to shady customer service. If I could give negative stars based on the seller alone, I would.
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Reviewed in the United States on May 27, 2020
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G. R. Trevisan
Lexington, US
★★★★★ 5
Well made value chair
Color: Black, Color: Black
Great value and well constructed. Easy to assemble. It’s very light and maneuverable. It’s reasonably comfortable for occasional use although I would prefer something with more support if I were using this every day. For my needs, however, it’s perfect. Adjustments are easy – especially height, changing from tilting to rigid. I also appreciate the swing up arms, which was a feature that I particularly liked with this chair.
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Reviewed in the United States on March 19, 2026
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Albert
Battle Creek, US
★★★★★ 5
Comfortable and Affordable
Color: Black
I normally dislike chairs like this, but with the budget I had I had to go with something more affordable. It is perfect and love how the handles go up to make a little bit more flush with the desk giving me some more room. The cushion is amazing, lumbar support is perfect for me. Very stable and I sometimes almost catch myself reclining back and wanting to fall asleep. Quality sturdy materials make it easy to attach any additional neck accessories to the chair. 10/10 would recommend.
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Reviewed in the United States on April 2, 2026
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Lexington, US
★★★★★ 4
Comfortable and Stylish Office Chair
Color: Black
The NEO Chair Office Desk Chair Computer High Back is a great addition to my workspace. It was easy to assemble and feels sturdy once put together. The high back provides good support, especially during long hours at my desk. The cushioning is comfortable, and the chair rolls smoothly without any issues. Overall, it looks professional and offers solid comfort for the price.
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