Boost Control Solenoid 3-Port 33Hz

The Boost Control Solenoid 3-Port 33Hz from HALTECH is a precision electro-pneumatic valve engineered for modern engine management systems requiring dynamic boost pressure regulation. Built for enthusiasts and professional tuners who demand reliable, repeatable boost control across varying load conditions, this solenoid integrates seamlessly into standalone ECU platforms and custom tuning setups. The 3-port configuration allows independent control of wastegate activation and boost response, making it essential for turbocharged and supercharged applications where precise air delivery directly impacts performance and engine safety.

Operating at 33 Hz switching frequency, this solenoid delivers fast, accurate modulation of boost pressure without the lag associated with mechanical boost controllers. The 3-port design enables tuners to manage both positive boost signal and negative wastegate vent independently, allowing fine-tuning of turbo spool characteristics and preventing overboost conditions. Compact at 5.05 × 1.15 × 5.9 inches and weighing just 0.3 lbs, the unit integrates into tight engine bay layouts with minimal installation complexity. The included harness and hardware ensure out-of-the-box compatibility with HALTECH ECU systems, eliminating sourcing delays and compatibility guesswork.

This solenoid is ideal for tuners building advanced boost control strategies on turbocharged four-cylinder, inline-six, and V-engine platforms where stock boost management is inadequate. Real-world applications include road race cars, drift builds, and street performance vehicles where repeatable boost curves are critical for consistency and engine longevity. Installation pairs directly with HALTECH standalone ECUs (such as the Elite series), allowing closed-loop boost target programming and anti-lag system integration. Proper sizing and calibration of the solenoid frequency ensures smooth boost ramps and eliminates hunting behavior common in poorly tuned systems.