{"product_id":"hirev-performance-manual-boost-controller-ball-spring-turbo-boost-controller-universal-kit-with-top-adjustment-knob","title":"HIREV Performance Manual Boost Controller — Ball \u0026 Spring Turbo Boost Controller, Universal Kit with Top Adjustment Knob","description":"\u003cp\u003e\u003cstrong\u003eThe HIREV PERFORMANCE Manual Boost Controller is a complete ball-and-spring kit that lets you precisely raise or lower turbo boost for internal or external wastegates.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDesigned from hands-on turbo installs rather than theory, this adjustable boost controller gives consistent, repeatable control over boost pressure while minimizing boost creep common to simple bleed-style devices. The kit ships ready to install with a mounting bracket, hose, clamps and a top-mounted adjustment knob so you can tune boost quickly and reliably on the street or at the track.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this controller improve boost stability?\u003c\/h3\u003e\n\u003cp\u003eThe ball-and-spring design creates a physical restriction in the boost reference line that stays consistent under load, providing steadier boost compared with many bleed controllers. The top adjustment knob lets you fine-tune spring preload so changes are incremental and repeatable.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBall-and-spring valve reduces sudden boost spikes and creep.\u003c\/li\u003e\n  \u003cli\u003eKnob adjustment provides small, predictable boost steps.\u003c\/li\u003e\n  \u003cli\u003eBench-tested for airflow and consistent operation before shipping.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill it fit my turbo setup—internal or external wastegate?\u003c\/h3\u003e\n\u003cp\u003eThis kit is compatible with both internal and external wastegates and installs inline on the pressure reference hose; no specialty adapters are required. The included hose and clamps cover most common vacuum\/boost line diameters used on street and sport turbo systems.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eWorks with internal and external wastegate configurations.\u003c\/li\u003e\n  \u003cli\u003eInline installation—no cutting complex lines or special tools.\u003c\/li\u003e\n  \u003cli\u003eIncludes hose and clamps sized for typical turbo reference lines.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat comes in the box and how easy is installation?\u003c\/h3\u003e\n\u003cp\u003eThe kit arrives complete: the manual boost controller assembly, a mounting bracket, boost hose and hose clamps. Installation is straightforward—mount the controller, cut the boost line, insert the controller inline, tighten clamps, then dial the knob to the desired boost level.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eComplete kit: controller, bracket, hose, clamps—ready to install.\u003c\/li\u003e\n  \u003cli\u003eSimple inline install—can be done with basic hand tools.\u003c\/li\u003e\n  \u003cli\u003eFactory inspection ensures no debris or blocked passages out of the box.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow precise are adjustments and what can I expect while tuning?\u003c\/h3\u003e\n\u003cp\u003eAdjustments are tactile and predictable: small turns of the top knob change spring preload and alter boost in consistent increments. Because the unit was bench-tested and validated on real turbo vehicles, you can expect repeatable results each drive session as long as boost control strategy and engine tuning are appropriate.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTop-mounted knob for controlled, incremental boost changes.\u003c\/li\u003e\n  \u003cli\u003eRepeatability across sessions thanks to mechanical ball-and-spring design.\u003c\/li\u003e\n  \u003cli\u003eRecommended to monitor boost with a gauge and tune safely.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? The HIREV PERFORMANCE Manual Boost Controller is aimed at enthusiasts and tuners who want a robust, street-ready way to adjust turbo boost without relying on complex electronics. It fits builders who run LS swaps, sport compact turbo projects, and daily-driven performance cars that need reliable, repeatable boost control. If you want a straightforward mechanical solution that ships complete and is pre-inspected, this kit provides a practical, proven option for manual boost management.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can this controller be used with an external wastegate?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The unit installs inline on the reference line and is compatible with both internal and external wastegates.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the kit include all parts needed for install?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It ships with the controller, mounting bracket, boost hose and hose clamps for a complete install.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"HIREV Performance","offers":[{"title":"Default Title","offer_id":55165981753687,"sku":"B0GXV5W9RC","price":38.44,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/hirev-performance-controller-front-view.jpg?v=1790360479","url":"https:\/\/britishgarage.co.uk\/products\/hirev-performance-manual-boost-controller-ball-spring-turbo-boost-controller-universal-kit-with-top-adjustment-knob","provider":"British Garage","version":"1.0","type":"link"}