Aeromotive Pump Speed Controller 2014-subaru-impreza-wrx-sti-esi7728397 Optional silver bezel and white

Optional silver bezel and white faceplate accessory kit available (sold separately)

dyno and race-proven mufflers for the street or track

Systems with black coated T-304 stainless steel tips

140638 is a full True Dual

Aeromotive Pump Speed Controller 2014-subaru-impreza-wrx-sti-esi7728397 Optional silver bezel and whiteFor any pump, on any type of vehicle, the Aeromotive Fuel Pump Speed Controller (FPSC) minimizes fuel heating and vapor lock problems by matching the duty cycle of the fuel pump to engine RPM. At low demand, the FPSC slows the fuel pump down, reducing the chance of suction side cavitation and vapor lock. When demand increases, the FPSC returns the fuel pump to 100% duty cycle for maximum flow. It? s like an automatic transmission for your fuel pump.