Wisher Performance AuxJection kit for GM LT4 engines, featuring the black billet adapter plate, fuel lines, and plug-and-play wiring harness for factory ECU integration.

AuxJection Systems | LTX Supplemental Fueling Kits

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  • AuxJection LT4 auxiliary fuel injection system with aluminum plate installed on a Camaro ZL1, data-validated for 1130 HP and perfect cylinder distribution.

    AuxJection | LT4 Stock Supercharger

    AuxJection | LT4 Stock Supercharger
    $1,800.00 USD
  • AuxJection port and methanol injection kit installed on a Magnuson 2650 supercharged LT1 Camaro SS

    AuxJection | LT1 & LT4 Magnuson 2650

    AuxJection | LT1 & LT4 Magnuson 2650
    $1,800.00 USD
  • AuxJection | Cadillac CT5-V Blackwing

    AuxJection | Cadillac CT5-V Blackwing

    AuxJection | Cadillac CT5-V Blackwing
    $2,400.00 USD
  • AuxJection | Whipple 3.0 Truck & SUV

    AuxJection | Whipple 3.0 Truck & SUV

    AuxJection | Whipple 3.0 Truck & SUV
    $1,800.00 USD