GrimmSpeed Manual Boost Controller – Universal | Black

Take control of your boost levels with the GrimmSpeed Manual Boost Controller — a simple, reliable, and proven ball-and-spring style MBC that works on any turbocharged vehicle. The GrimmSpeed MBC bleeds off a portion of the wastegate actuator signal, allowing the turbocharger to build boost beyond the factory wastegate spring pressure. No electronics, no solenoids, no complexity — just a straightforward mechanical boost controller that delivers adjustable boost with maximum reliability. Available in black for a clean, stealthy underhood appearance.

Key Features

• Adjustable Boost: Allows boost levels to be set above the factory wastegate spring pressure — simple mechanical adjustment for dialing in your target boost level
• Ball-and-Spring Design: Proven ball-and-spring MBC design — simple, reliable, and resistant to the heat and vibration of the turbo environment with no electronics to fail
• Universal Fitment: Compatible with any turbocharged vehicle using an internal or external wastegate with a pneumatic actuator signal — Subaru, Mitsubishi, Nissan, Honda, and more
• No Electronics Required: Fully mechanical operation — no wiring, no solenoids, no ECU integration required for basic boost control
• Black Finish: Black anodized finish for a clean, stealthy underhood appearance
• GrimmSpeed Quality: Manufactured by GrimmSpeed — a trusted name in Subaru and turbo performance parts

Specifications

• Type: Manual Boost Controller (MBC)
• Design: Ball-and-Spring
• Finish: Black
• Fitment: Universal — any turbocharged vehicle with pneumatic wastegate actuator
• Part Number: 070002

Note: Running elevated boost levels above factory tune targets requires an ECU tune to safely adjust fuelling and ignition timing — running increased boost on a stock tune risks engine damage. A manual boost controller does not provide boost spiking protection or closed-loop boost control — for more precise boost management, consider an electronic boost controller. Professional installation and tuning recommended.