MSD UNIVERSAL PROGRAMMABLE FUEL PUMP VOLTAGE BOOSTER KIT, BILLET ALUMINUM, RED ANODIZED -- Includes mounting hardware and installation manual; Does not include switches; Program boost adjustment through a PC for improved control and accuracy; Maintains fuel volume in relation to boost pressure by stepping up the supply voltage to the electric fuel pump; Voltage output is adjustable up to 22 V at 15 psi of boost; For use with stock electric fuel pumps or secondary booster pumps.