BRAND HOLLEY TERMINATOR EFI X STEALTH 4150 2X4, GOLD FINISH, 8 INJECTORS, 800-1500 HP, 650 HP NATURALLY ASPIRATED THE TERMINATOR X STEALTH 4150 2X4 EFI SYSTEMS FROM HOLLEY FEATURES 8, 100LB/HR FUEL INJECTORS CAPABLE OF SUPPORTING UP TO 1500 HP NATURALLY ASPIRATED OR 1250 HP ON FORCED INDUCTION APPLICATIONS. THE TERMINATOR X ECU IS CAPABLE OF FUEL MAP SELF-LEARNING AND IGNITION TIMING CONTROL, IMPROVING IDLE STABILITY, DRIVABILITY & WIDE-OPEN THROTTLE HORSEPOWER. FEATURES: BOLT ON 2X4 4150 FLANGE CARBURETOR REPLACEMENT SUPPORTS UP TO 1500 HP NATURALLY ASPIRATED OR 1250 HP FORCED INDUCTION WITH 8 - 100 LB/HR INJECTORS INTERNAL 1BAR MAP SENSOR, BUILT INTO THE TERMINATOR X ECU EXTERNAL FUEL PRESSURE REGULATOR REQUIRED, SET TO A BASE PRESSURE OF 58.5 PSI INTEGRATED IGNITION TIMING CONTROL HIGH RESOLUTION FULL COLOR TOUCHSCREEN FOR INITIAL SETUP, TUNING & GAUGE DISPLAYS SIMPLE CALIBRATION WIZARD (ANSWER A FEW QUESTIONS ABOUT YOUR ENGINE AND IT CREATES THE BASE MAP, THEN STARTS TUNING ON ITS OWN!) - NO LAPTOP REQUIRED! SELF-TUNING ECU THE INCLUDED GENUINE BOSCH LSU 4.9 WIDEBAND OXYGEN SENSOR PROVIDES REAL-TIME FUEL MAP LEARN! OEM STYLE TPS/IAC AND FUEL PRESSURE REGULATOR, FOR YEARS OF DEPENDABLE SERVICE INCLUDED WELD-IN O2 SENSOR BUNG FOR THE EXHAUST ENSURES A LEAK FREE OXYGEN SENSOR INSTALLATION PLUG & PLAY WITH HOLLEY EFI ACCESSORIES SPECS: BRAND: HOLLEY EFI COLOR: GOLD IGNITION TYPE: UNIVERSAL INJECTOR SIZE: 100 LB/HR @ 58.5 PSI MAX HORSEPOWER RATING: 650 NATURALLY ASPIRATED PRODUCT TYPE: EFI SYSTEM YOU CAN VIEW AND DOWNLOAD THE COMPLETE ASSEMBLY INSTRUCTION BOOKLETS FOR THIS EFI SYSTEM HERE.