<strong>01. </strong>The MPG-MAX kit comes with three injectors. One has a small nozzle that is fed by the electric pump as soon the system activates (usually around 6 psi unless programmed otherwise). The other two can be fired at the same time using a T-fitting after the supplied solenoid (which turns on at a higher set boost pressure and fuels the second and third injectors). After consulting the supplied directions and notes in the Snow Performance kit, Xtreme Unlimited in Oceano, California, chose to use only two injectors (only one with a larger nozzle after the solenoid instead of two). For maximum effects, you’ll want to use all three injectors (two after the solenoid).