Overview

Holley Sniper EFI Stealth 4500 Fuel Injection Systems

Holley Sniper EFI Stealth 4500 fuel injection systems are what you need to convert your dragster or Pro-street vehicle to fuel injection. For engines producing 800+ hp, the Sniper Stealth 4500 systems feature eight 100 lbs./hr. injectors and a throttle body that flows a massive 1,440 cfm. These Holley systems come with a USB to CAN tuning cable and free downloadable Sniper EFI software to give you unlimited control of your engine. Holley Sniper Stealth 4500 systems will also look great under the hood in your choice of shiny, ceramic black, and classic gold finishes.

Features and benefits include:

* Supports up to 1,500 hp naturally aspirated or 1,250 hp forced induction with eight 100 lbs./hr. injectors
* Compatible with draw-through or blow-through forced induction applications
* 2.125 in. throttle plates, flow 1,440 cfm for large cubic inch engines
* 2.5Bar MAP sensor
* Integrated ignition timing control
* Programmable launch control via 2-step and timing retard. Both can be triggered by a trans-brake input
* Gen 3 Ultra Dominator-style 4-bolt air cleaner flange
* -8AN fuel inlets
* 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
* The included genuine Bosch LSU 4.9 wideband oxygen sensor provides real time Fuel Map Learn
* Built-in single-stage wet or dry progressive nitrous control
* Three programmable 0-5 V sensor inputs for oil/fuel/dome or nitrous pressure or other critical information
* Six programmable ground outputs, five programmable ground inputs. These can be used to trigger or control external devices, such as nitrous solenoids and boost control solenoids. Or to provide the ECU with an input to turn on function, such as an ignition timing
* One +5 V reference output, +5 V power supply for 0 to 5 V sensors, one sensor ground supply for 0 to 5 V sensors
* Throttle body mounted ECU--no extra boxes to mount
* Only 4 wiring connections required--battery +, battery -, switched ignition, and rpm
* Required external fuel pressure regulator, 12-848 is recommended
* Customizable secondary fuel pump output (TPS, rpm, or boost enabled)
* User-friendly boost control with handheld adjustability
* Free software included--comprehensive data logging tool to help you maximize the performance of your engine
* Real-time data logging to the included 3.5 in. touch screen allows you to save information to the SD card without needing a communication cable
* Programmable target air fuel ratios per boost level
* Advanced boost control available via free Sniper EFI tuning software, including boost vs. rpm and boost vs. time
* OEM-style TPS/IAC, for years of dependable service
* Included clamp-on oxygen sensor kit ensures a leak-free oxygen sensor installation, with stainless steel T-bolt clamps and a stainless steel (weldable) oxygen sensor flange

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