• Flows 10% more.
• No splicing wire.
• Factory Fit for clean install.

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 GrimmSpeedT 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 am 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 in the ECU which will allow you to run the maximum a of boost at every given rpm. This gives you more power throughout the range an