Tein Street Advance Z Coilover Suspension Kit - Impreza GDB WRX STi (PCD 5x100) Rays The Boost Dependent controller has

The Boost Dependent controller has an on-board manifold absolute pressure (MAP) sensor with a molded-in nipple for a boost hose pickup

Applying CFD mechanics from initial design

As parts of your engine wear down over time

it reduces bump steer when lowering the car and suppresses sudden toe changes

Tein Street Advance Z Coilover Suspension Kit - Impreza GDB WRX STi (PCD 5x100) Rays The Boost Dependent controller hasMuch like Tein Street Basis, Street Advance utilises a twin tube system and has adjustable lowering spring seats allowing you to adjust ride height. Unlike Street Basis, it also features adjustable damping force, allowing you to effectively change your handling characteristics. Compared to mono tube suspension, Street Basis is twin tube, meaning it attains a longer stroke with a smaller repulsive force, resulting in excellent high ride comfort.