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Holley EFI | SKU:
550-1021
Holley 550-1021 EFI Terminator X Stealth GM LS 4150 - Black
24X Crank - 4 Injectors - 650 HP
Regular price
$4,148.10 NZD
+ GST
Unit price
/
Unavailable
Shipping calculated at checkout.
Holley 550-1021 EFI Terminator X Stealth GM LS 4150 - Black is not in stock at Fast Lane Spares and will ship direct from supplier
⚠ Special Order Item — ships direct from supplier. No returns, exchanges, or cancellations once processed. Please allow 7–20 days shipping.
Stock Status:
Holley 550-1021 EFI Terminator X Stealth GM LS 4150 - Black
Regular price
$4,148.10 NZD
+ GST
Unit price
/
Unavailable
Description
Description
24X Crank - 4 Injectors - 650 HP
Part Number: 550-1021
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 and Benefits
• 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 â€"Plug and play with factory LS coil sub harness and OEM LS coils â€" 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 don’t have to be a computer/tuning wiz to have EFI!
• 4 Inputs â€" 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 â€" 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
Part Number: 550-1021
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 and Benefits
• 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 â€"Plug and play with factory LS coil sub harness and OEM LS coils â€" 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 don’t have to be a computer/tuning wiz to have EFI!
• 4 Inputs â€" 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 â€" 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
Specifications
Specifications
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Specifications
Accelerometer Support Yes Boost Control Yes Brand Holley EFI CAN-BUS Support Yes Category Air and Fuel Delivery CFM 950 Coil Per Cylinder Ignition Support Yes Color Black Crank Reluctor 24x Datalogging Support Yes Distributor Included No Dry Nitrous Control Yes e85 Support No EGT Support Yes Emission Code 3 Finish Black Flange Size 4150 Flange Style Squarebore Forced Induction Support Yes Fuel Filter Included No Fuel Hose Included No Fuel Injectors Included Yes Fuel Pressure 58.5 PSI Fuel Pressure Regulator Included No Fuel Pump Included No Grade Type Performance Handheld Included Yes Idle Air Control Motor Included No Ignition Timing Control Yes Ignition Type GM LS 24x Individual Cylinder Fuel Corrections No Injector Size 100 lb/hr @ 58.5 PSI Inlet / Outlet Size 6AN Intake Manifold Included No Knock Retard Support Yes MAP Sensor 1bar Max Horsepower Rating 650 Mounting Hardware Included No Multi-Stage Nitrous Control Yes part type Fuel Injection System Product Type EFI System Progressive Nitrous Control Yes Self-Tuning Yes Sub Category Fuel Injection System and Related Components Terminator LS Options Fuel, Spark Throttle Bore 1.75 in. Throttle Position Sensor Included Yes Transmission N/A User-Tuneable Yes Warning California Proposition 65 -
Instructions
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