BRAND NEW HOLLEY TERMINATOR X MAX STEALTH 4150 58X LS, BLACK FINISH, COMPATIBLE WITH GM 4L60 & 4L80 TRANSMISSIONS (PART #550-1064). THE TERMINATOR X STEALTH 4150 EFI SYSTEM FROM HOLLEY FEATURES 4, 100LB/HR FUEL INJECTORS CAPABLE OF SUPPORTING UP TO 650 HP NATURALLY ASPIRATED OR 600 HP ON FORCED INDUCTION APPLICATIONS. THE TERMINATOR X ECU FEATURES FUEL MAPS THAT SELF-LEARN AND INTEGRATED IGNITION TIMING CONTROL, YIELDING IMPROVED IDLE STABILITY, DRIVABILITY, AND HORSEPOWER AT WIDE-OPEN THROTTLE! DID WE MENTION THAT THE STEALTH 4150 ALSO INCLUDES TRANSMISSION KICK DOWN PROVISIONS FOR GM TH350/400, 200R4/700R4 AND FORD C4/C6 APPLICATIONS? TERMINATOR X MAX KITS PROVIDE PLUG AND PLAY TRANSMISSION CONTROL FOR GM 4L60 AND 4L80 TRANSMISSIONS. FEATURES: TERMINATOR X STEALTH 4150 KITS FOR EITHER 24X OR 58X LS ENGINES SUPPORTS UP TO 650HP WITH FOUR 100LB./HR. INJECTORS TERMINATOR X MAX KITS PROVIDE PLUG AND PLAY TRANSMISSION CONTROL FOR GM TRANSMISSIONS INTERNAL 1BAR MAP SENSOR, BUILT INTO THE TERMINATOR X ECU. ALL OF THE WIRING EXITS BELOW THE FUEL INJECTOR BOWLS, FOR A COMPLETELY STEALTH INSTALLATION AIR ENTRY MACHINED TO FIT MOST STOCK STYLE AIR CLEANERS WITH AIR CLEANER LOCATOR PROVISIONS EXTERNAL FUEL PRESSURE REGULATOR REQUIRED, SET TO A BASE PRESSURE OF 58.5 PSI, SUCH AS 12-886 INTEGRATED IGNITION TIMING CONTROL - PLUG AND PLAY WITH FACTORY LS COIL SUB HARNESS AND OEM LS COILS - NO EXTERNAL BOXES/MODULES NEEDED TO RUN COIL NEAR PLUG HIGH RESOLUTION FULL COLOR TOUCHSCREEN FOR INITIAL SETUP, TUNING, AND 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 MEANS YOU DONT HAVE TO BE A COMPUTER/TUNING WIZ TO HAVE EFI! 4 INPUTS - 12V, GROUND, 5V, AND FREQUENCY, FOR THINGS SUCH AS ADDITIONAL PRESSURE SENSORS, OR ACTIVATION TRIGGERS FOR NITROUS ACTIVATION, OR A TRANS BRAKE (FUEL AND OIL PRESSURE INPUTS ARE PRE-TERMINATED) 4 OUTPUTS - GROUND, PWM - , FOR ACCESSORIES SUCH AS; FANS, BOOST CONTROL, NITROUS CONTROL, IAC KIT, AND MORE THE INCLUDED GENUINE BOSCH LSU 4.9 WIDEBAND OXYGEN SENSOR PROVIDES REAL-TIME FUEL MAP LEARN! OEM STYLE TPS/IAC, FOR YEARS OF DEPENDABLE SERVICE AVAILABLE IN 3 FINISHES: SHINY, BLACK AND GOLD COMPATIBLE WITH HOLLEY EFI DIGITAL DASHES, GAUGES AND FUEL SYSTEM ACCESSORIES SPECS: BRAND: HOLLEY EFI COLOR: BLACK IGNITION TYPE: GM LS 58X INJECTOR SIZE: 100 LB/HR @ 58.5 PSI MAX HORSEPOWER RATING: 650 NATURALLY ASPIRATED PRODUCT TYPE: EFI SYSTEM TERMINATOR LS OPTIONS: FUEL, SPARK, TRANSMISSION YOU CAN VIEW AND DOWNLOAD THE COMPLETE ASSEMBLY INSTRUCTION BOOKLET HERE.