HIREV Performance Manual Boost Controller — Adjustable Ball-and-Spring Turbo Boost Kit with Top-Mount Knob, Internal & External Wa

This compact boost controller kit was designed from real-world turbo builds to give repeatable, mechanical boost control without the complexity of electronic systems. The unit uses a ball-and-spring metering mechanism and a top-mounted adjustment knob to change boost pressure cleanly, with a full installation kit included so you can fit it quickly and start testing boost levels right away.

How does this controller change boost compared with a bleed-style controller?

The ball-and-spring design meters pressure directly through an adjustable orifice, offering steadier control and less tendency to creep at high loads than many basic bleed controllers. You turn the top knob to move the ball relative to the seat, which alters how much pressure reaches the wastegate actuator and therefore sets the target boost level.

• Precision top-mounted adjustment for repeatable changes
• Reduced boost creep versus simple bleed-style valves
• Mechanical operation — no wiring or electronics needed
• Works inline with existing boost hose routing

Will this fit my turbo setup and how easy is installation?

The HIREV kit is built to be universal: it installs inline on the control line and functions with both internal and external wastegates. The package includes the controller, mounting bracket, boost hose and clamps, so you have all the basic hardware needed for a straightforward install.

• Compatible with internal and external wastegates
• Includes hose, clamps and mounting bracket for quick fitment
• No special tools or electrical connections required
• Works with common boost line diameters found on street and race setups

How do I tune and adjust boost safely with this controller?

Tuning with this mechanical controller is manual and incremental: make small changes, run the engine, and verify boost with a reliable gauge. Because the device alters the pressure signal to the wastegate, monitoring boost and engine health is essential; use safe, conservative steps and confirm each change under controlled conditions.

• Turn adjustment knob in small increments and test between adjustments
• Always monitor boost with a dedicated gauge when tuning
• Verify actuator travel and wastegate operation after changes
• If unsure, consult a tuner experienced with manual boost controllers

Who is this for? The HIREV Performance Manual Boost Controller is aimed at enthusiasts and tuners who want a durable, mechanical way to control turbo boost without electronics—ideal for street builds, LS swaps, track cars, and other turbocharged projects where repeatable, hands-on adjustment is preferred. If you need an out-of-the-box kit that includes mounting hardware and hoses, and you value a design tested on real builds rather than generic parts, this controller provides a practical tuneable solution. If you require automated boost control, closed-loop safety features, or datalogging integration, pair this controller with appropriate gauges and safety devices or consider an electronic boost controller system.