SpeedFactory Racing 4 Port Boost Control Solenoid Kit Shock Absorbers Entirely aluminium and with etched

Entirely aluminium and with etched red shift pattern on top

When fitting a single exit exhaust to your Impreza GRB or GRF

Thick-walled intake runners leave large allowances for porting to minimize chances of breakthrough and a larger 70mm throttle body opening offer maximum air flow

Nissan S15 Silvia Tomei Expreme Ti is a super high quality

With the use of a specialized air filter cleaning solution and low-pressure water

SpeedFactory Racing 4 Port Boost Control Solenoid Kit Shock Absorbers Entirely aluminium and with etchedThe SpeedFactory Racing 4 Port Boost Control Solenoid Kit allows precise boost control with a PWM (pulse width modulation) signal from a source (Engine Control Module or Electronic Boost Controller). This solenoid can raise the boost level as high as 6 7 times the spring pressure of the wastegate and offers very precise control at very high boost levels. The 4 Port Solenoid also allows you to use much lower wastegate spring pressures for better boost