By combining several steps of spring rates into the one spring the vibration frequency becomes amazingly high
Durability: Stainless steel support wire prevents hose collapse under high boost and extends service life beyond OEM parts
Built with a focus on durability and engineering excellence
engineered for superior street performance
robust suspension components that maximize performance without sacrificing reliability
Grimmspeed 3-Port Electronic Boost Control Solenoid 2008-2014 WRX / 2005-2009 Legacy GT / 2005-2009 Outback XT / 2009-2013 Forester XT metaneed By combining several steps ofGrimmSpeed is proud to offer the most complete, reliable, and easy to use 3 Port Electronic Boost Solenoid available for turbocharged Subaru models. Unlike the factory 2 port solenoid, the GrimmSpeed BCS delivers extremely high resolution boost control, giving your tuner the precision needed for stable, predictable, and safe boost levels. Expect quicker turbo spool, tighter boost regulation across the entire RPM range, and consistent performance