Holley EFI Archives - Hartline Performance

Holley TERMINATOR X STEALTH 4150 EFI System

Hartline Performance — Fri, 10 Apr 2020 19:12:11 +0000

The Terminator X Stealth 4150 EFI system from Holley features either:

4, 100LB/HR Fuel Injectors capable of supporting up to 650 HP naturally aspirated or 600 HP on forced induction applications.

8, 100LB/HR Fuel Injectors capable of supporting up to 650 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, and wide-open throttle horsepower! 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 Stealth 4150 kits provide transmission control for Pre-2009 GM 4L60E/4L80E Transmissions (Part numbers 550-1011, 550-1012, 550-1013)

Features:

Bolt on 4150 Flange Carburetor Replacement
Supports up to 650HP with Four 100lb/hr Injectors
Terminator X Max Stealth 4150 kits provide transmission control for Pre-2009 GM 4L60E/4L80E Transmissions (Part numbers 550-1011, 550-1012,550-1013)
Includes high pressure fuel crossover line
All of the wiring exits below the rear fuel injector cover, for a completely stealth installation
Timed spark part for vacuum advanced distributors located under the front fuel bowl, for easy access to the distributor
Air entry is 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 Holley part # 12-886
Integrated ignition timing control improves idle stability, fuel economy, and wide open throttle performance
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
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

Tech Resources:

Quick Start Guide

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Holley HP EFI ECU & Harness Kit for Universal V8 Multi-Point Fuel Injection

Hartline Performance — Wed, 27 Mar 2019 18:52:16 +0000

Looking for a plug and play alternative for your stock or built late model factory EFI engine? How about a replacement ECU for your older Holley C950? Holley has you covered. HP EFI ECU and harness kits are designed to be used with popular factory EFI engines as an alternative to the factory ECU and harness or as a replacement for your C950 ECU. The HP allows you to accurately control the fuel and ignition of your engine along with additional controls for nitrous, boost or water meth.

Features:

Optional 5.7? full-color touchscreen LCD allows easy on-the-fly tuning, data-logging or can be used as an easy to see graphical gauge panel
Eight sequentially driven 8:2 peak and hold injector drivers, capable of driving up to 16 low or high impedance injectors as a standard feature. Multiple staged injector strategies
Eight channel Distributorless Ignition (DIS)outputs capable of directly driving ?Smart? ignition coils or Holley DIS coils. Will drive 2 wire coils with the addition of PN 554-112 high current coil driver module
Integrated single channel wide band oxygen sensor control. Works with NTK or Bosch sensors
Internal data-logging standard with a huge 2GB of memory
4 Stage progressive nitrous control
Turbo boost control
Integrated water/methanol injection control
Self-tuning fuel table strategy greatly simplifies tuning process
Individual cylinder fuel and spark control allows you to unlock your engine?s potential
Works with 4, 6, 8 cylinder engines
Unique lb/hr based fueling strategy greatly simplifies and commonizes tuning
Advanced idle, closed loop, and enrichment strategies allow for very stable operation
ECU is fully potted and can be mounted in the engine compartment or interior
Sealed automotive and marine grade connectors
Allows for use of common OEM sensors as well as customer sensor calibration input
Ignition Plug and Play with GM HEI, Ford TFI, magnetic and hall effect trigger, and other ignition systems. New Plug and Play applications in process. Custom settings can be configured to allow many other applications
1-5 Bar MAP sensor capability
Two channel knock control sensor Inputs for both one or two wire knock sensors
Dedicated fuel and oil pressure inputs
Controls both stepper and PWM Idle Air Control (IAC) motors
Speed density, Alpha-N, or combination fueling strategies
4 Programmable high or low Pulse Width Modulated (PWM) outputs and 4 fully configurable inputs can be configured for use
4 Stage nitrous oxide control
Fully featured nitrous control eliminates the need for a separate nitrous controller device
Can be configured ?Wet? or ?Dry? with closed loop feedback
Progressive control based on time, RPM, or boost, requires part # 554-111
Lean or rich safety cutoff
Full timing retard/control configurability per stage based on RPM or time
Integrated Water/Methanol injection control
Uses Holley Water/Meth solenoids specially designed and calibrated for use with this EFI system to allow the user to enter Water/Meth flow as a percentage of fuel injector flow for Water/Meth tuning precision unmatched in the industry

The post Holley HP EFI ECU & Harness Kit for Universal V8 Multi-Point Fuel Injection appeared first on Hartline Performance.

Holley HP EFI ECU & Harness Kit for GM LS1/LS6

Hartline Performance — Wed, 27 Mar 2019 18:45:36 +0000

Looking for a plug and play kit for your GM LS engine? The HP ECU allows you to accurately control the fuel and ignition of your engine plus much more! Got a stock LS engine? Simply download a base map and you’re on your way. Got a turbocharged, nitrous fed LS engine on water/meth? This HP EFI kit can control that too! Stop re?flashing your factory ECU every time you make a performance modification. Get Holley EFI today!

Features:

Simple Installation – Plug and Play control of GM LS1/LS6 engines. Just plug the harness into your factory sensors, wire the power and grounds and you are ready to take complete control of your LS engine
More Functionality – Provides significantly more functionality than OEM or other competitive ECUs (boost control, nitrous control, water/meth injection, plus a host of additional inputs and outputs to control fans, pumps, relays etc.)
Easy To Use – Laptop programmable ECU includes a variety of base maps that will have you hitting the cruise or track in no time
Ideal For Everything – including stock 5.3L engine swaps or all out, 3,000+ horsepower race cars that need a simple and powerful ECU and harness solution
Industry Leading Self Tuning Fuel Strategy – means less time tuning and more time enjoying the power of your LS vehicle
Kit includes ECU, harness, communication cable, software and and Bosch wideband 02 sensor designed to be used with GM LS1/LS6 engines with factory GM coils and a 24 tooth crank sensor
ECU is fully potted and can be mounted in the engine compartment or interior
Sealed automotive and marine grade connectors
1-5 Bar MAP sensor capability
Optional plug and play hand-held programmer, 5.7″ touchscreen and digital gauges are available for ultimate control and vehicle monitoring
ECU is certified to ISO 8846, SAE J1171 & United States Coast Guard Requirements for Ignition Protection & Fire Resistance
For a full list of advanced features such as boost, nitrous, water/meth, individual cylinder control and more click the document icon under the product image!

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Holley Sniper EFI 4500 – Classic Gold Finish

Hartline Performance — Wed, 27 Mar 2019 18:39:07 +0000

Introducing the Sniper Stealth 4500 EFI System! Wanting to convert your Dragster or Pro-street vehicle to Fuel Injection? Look no further! The Sniper Stealth 4500 EFI system from Holley features 8, 100LB/HR Fuel Injectors capable of supporting 800 to 1500 HP naturally aspirated, or 800-1250 HP on forced induction applications. The Sniper Stealth 4500 also features multiple Input and Output options for sensor inputs and switched outputs to control external relays. This system also comes with a USB to CAN tuning cable and free downloadable Sniper EFI Software give you unlimited control of your engine

Features:

Supports up to 1500 HP Naturally Aspirated or 1250 HP Forced Induction with Eight 100 Lb/Hr Injectors
Compatible with Draw through or Blow through forced induction applications
2.125? Throttle Plates, Flow 1440 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 realtime Fuel Map Learn
Built-in Single Stage Wet or Dry progressive nitrous control
Three Programmable 0-5V 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, boost control solenoids. Or to provide the ECU with an Input to turn on function such as an ignition timi
One +5v Reference Output – +5V Power Supply for 0-5v Sensors, One Sensor Ground ? Ground supply for 0-5v Sensors
Throttle body mounted ECU ? no extra boxes to mount
Only 4 Wiring Connections Required! (Battery +, Battery – , Switched Ignition & 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 datalogging tool to help you maximize the performance of your engine
Real-time datalogging to the included 3.5? 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
Patent Pending

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Holley Sniper EFI 4500 – Black Ceramic Finish

Hartline Performance — Wed, 27 Mar 2019 18:33:58 +0000

Features:

Supports up to 1500 HP Naturally Aspirated or 1250 HP Forced Induction with Eight 100 Lb/Hr Injectors
Compatible with Draw through or Blow through forced induction applications
2.125? Throttle Plates, Flow 1440 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 realtime Fuel Map Learn
Built-in Single Stage Wet or Dry progressive nitrous control
Three Programmable 0-5V 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, boost control solenoids. Or to provide the ECU with an Input to turn on function such as an ignition timi
One +5v Reference Output – +5V Power Supply for 0-5v Sensors, One Sensor Ground ? Ground supply for 0-5v Sensors
Throttle body mounted ECU ? no extra boxes to mount
Only 4 Wiring Connections Required! (Battery +, Battery – , Switched Ignition & 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 datalogging tool to help you maximize the performance of your engine
Real-time datalogging to the included 3.5? 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
Patent Pending

The post Holley Sniper EFI 4500 – Black Ceramic Finish appeared first on Hartline Performance.

Holley Sniper EFI 4500 – Shiny Finish

Hartline Performance — Wed, 27 Mar 2019 18:20:07 +0000

Features:

Supports up to 1500 HP Naturally Aspirated or 1250 HP Forced Induction with Eight 100 Lb/Hr Injectors
Compatible with Draw through or Blow through forced induction applications
2.125? Throttle Plates, Flow 1440 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 realtime Fuel Map Learn
Built-in Single Stage Wet or Dry progressive nitrous control
Three Programmable 0-5V 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, boost control solenoids. Or to provide the ECU with an Input to turn on function such as an ignition timi
One +5v Reference Output – +5V Power Supply for 0-5v Sensors, One Sensor Ground ? Ground supply for 0-5v Sensors
Throttle body mounted ECU ? no extra boxes to mount
Only 4 Wiring Connections Required! (Battery +, Battery – , Switched Ignition & 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 datalogging tool to help you maximize the performance of your engine
Real-time datalogging to the included 3.5? 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
Patent Pending

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Holley Dominator EFI ECU

Hartline Performance — Wed, 27 Mar 2019 17:57:49 +0000

Dominator? EFI Vehicle Management Systems are intended for all engine applications, from street to unlimited high-end racing applications. In addition to the transmission control, drive by wire, and dual wideband oxygen sensor options, Dominator? systems have nearly unlimited capabilities to control any power adder, input, or output you can throw at them. Need to run a turbocharged, nitrous injected 8 cylinder running water-methanol injection? No problem with Dominator? EFI. How about control a 4L60E transmission as well as the fuel and spark on your street rod? No problem. There are also enough inputs and outputs to allow the Dominator? VMSs to serve as their own data acquisition and control module. The Dominator? VMS will eliminate the need for additional controllers as they are all contained in this one unit. The only thing limiting the Dominator? Vehicle Management System is your imagination!

Features:

Works with 4, 6, 8 and 10 cylinder engines
Ignition Plug and Play with GM LS engines (non-VVT), GM HEI, Ford TFI, Coyote (non-VVT), 4.6/5.4 Mod Motor, Late Model HEMI and magnetic and hall effect trigger. Custom settings can be configured to allow for use with many other applications
Integrated electronic transmission control – Operates GM 4L60E and 4L80E transmissions, Ford AODE and 4R70W with more to come in the future
Integrated drive by wire throttle body control – Can control two drive by wire throttle bodies. Compatible with a number of DBW throttle bodies including GM, Chrysler, Ford, and Nissan
Integrated dual channel wide band oxygen sensor controls ? For monitoring both engine banks (NTK or Bosch sensors)
Extensive amount of inputs and outputs allow for limitless combination of options. Allows for unit to be used as a complete data acquisition system as well
Twelve sequentially driven 8:2 peak and hold injector drivers, capable of driving up to 24 low or high impedance injectors as a standard feature. Multiple staged injector strategies
Twelve channel Distributorless Ignition (DIS) outputs capable of directly driving ?Smart? ignition coils or Holley DIS coils. Will drive 2 wire coils with the addition of PN 554-112 high current coil driver module
Speed density, Alpha-N, Alpha-N Combination, and VE fueling strategies ? Tuner has the option to select from a variety of load sensing strategies to meet their engine requirements or tuning preference
Individual cylinder fuel and spark control allows you to unlock your engine?s potential
Unique lb/hr based fueling strategy greatly simplifies and commonizes tuning
Advanced idle, closed loop, and enrichment strategies allow for very stable engine operation
1-7 Bar MAP sensor capability ? For naturally aspirated or boosted applications
Fuel Map and Learn Function Smoothing ? Helps to smooth rough areas of the maps
Configurable User Password Protection ? ?Lock? your tune to prevent tampering
Self-tuning fuel table strategy greatly simplifies tuning process ? The more you drive it, the more it learns
?Quick Start? strategies ? For faster engine starting
Allows for use of common OEM sensors as well as custom sensor calibration input
Two channel knock control sensor inputs for both one or two wire knock sensors
Dedicated fuel and oil pressure inputs
Controls both stepper and PWM Idle Air Control (IAC) motors
3 Rev Limiters ? Choose between 4 options for each: Fuel Only, Spark Only, Fuel and Spark, or Soft
Traction Control ? Allows power reduction via timing, nitrous percentage or boost (Requires Davis Technologies Holley Module)
Store and select between four calibrations with Multi Map Selector (Part Number 558-407)
HARDWARE
ECU is fully potted and can be mounted in the engine compartment or interior ? See images for dimensions
Sealed automotive and marine grade connectors
Optional Digital Displays – 7″ Digital Dash (PN 553-106) / 3.5″ Touch Screen LCD (PN 553-108)
7″ Race Dash (PN 553-106) features full gauge layout customization, and nearly limitless tuning options.
Optional LED gauges (Part numbers 553-100 and 553-101) eliminate the need for additional sending units
DATA VISUALIZATION TOOLS
Data Logger ?Analyze and export your data with sophisticated, but user friendly tools ? Internal logger has 4 GB of memory
Strip Chart ? For real-time data viewing
Fully Configurable lap top Gauge Panel ? Life-like gauge cluster on your laptop screen
Racepak Integration Module Available.
Data logger – Smoothing, multiple graph view, pre-defined notes fields and more..
8 STAGE NITROUS OXIDE CONTROL
Fully featured nitrous control eliminates the need for a separate nitrous controller device
Can be configured ?Wet? or ?Dry? with closed loop feedback
Progressive control based on time, RPM, or boost, requires part # 554-111
Lean or rich safety cutoff
Full timing retard/control configurability per stage based on RPM or time
INTEGRATED WATER/METHANOL INJECTION CONTROL
Uses Holley water/meth solenoids specially designed and calibrated for use with this EFI system to allow the user to enter water/meth flow as a percentage of fuel injector flow for water/meth tuning precision unmatched in the industry
Allows for two nozzles to be controlled
Nozzles available from 400 to 1000 cc/min
Complete control of pump activation, and low system safety features
TURBOCHARGER BOOST CONTROL
Fully featured boost control capability eliminates the need for a separate boost control device
Can be configured to control boost based on time, gear, speed, and manual inputs
Gear based boost control configurable by several different methods
?Boost Builder? functions offer the ability to assist building boost on the starting line by altering ignition timing, fueling, as well as nitrous oxide activation. Can also be used as an anti-lag function
INPUTS AND OUTPUTS
13 – ?Multi-Inputs? ? Can be configured as a 0-5V sensor input, 0-20v sensor input, thermistor temperature input, or high or low voltage input
30 – 0-5V Sensor Inputs ? Configures any 0-5V sensor as well as some can be used as switched high or low inputs
4 – Speed Inputs ? Can be configured as a digital (square wave) input or an inductive input
20 – 12v PWM Outputs ? Can be configured as PWM or switched 12V outputs. Rated at 2A maximum
16 – Ground PWM Outputs ? Can be configured as PWM or switched ground outputs. Rated at 2A maximum
All inputs and outputs are programmed using innovative new ?Pin Mapping? strategy that allows inputs and outputs to be pinned as desired by the user, allowing for inputs and outputs to not be ?wasted? by non-used dedicated functions
Configurable for: dual cooling fans (including brushless fans that require PWM signal), dual fuel pumps, AC inputs, basic TCC lockup, and multiple timing retard inputs
User programmable caution and warning outputs for all sensors
ADVANCED TUNING ICF
Fully User Configurable tables, 1D, 2D, 1D Per Gear, 2D Per Gear
Tables allow for virtually unlimited dimensional tuning of fuel, spark, boost, nitrous and more
User can modift fuel, timing, boost, nirtrous, individual cylinder, ignition dwell, DBW, and more
Parameters can be adjusted based on any input, sensor, or time.

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Holley HP EFI ECU

Hartline Performance — Wed, 27 Mar 2019 17:29:12 +0000

Features:

NEW V4 SOFTWARE FEATURES
?Quick Start? ignition and fueling strategy for LS x Engines
Data Logger. Scalable axes, Smoothing, Multiple graph view ability, Pre-defined notes fields and many more
Strip Chart Real-Time Data Viewer
Integrated Boost Control – Boost vs Time, Boost vs Gear (Time or RPM), Boost vs RPM, Boost vs Speed, Launch control. Boost launch builder, Over-boost safeties, Boost scramble
Traction Control – Power reduction via timing, nitrous percentage or boost (Requires Davis Technologies Holley Module)
?Quick Start? fueling for all engines
Option for VE based fueling strategy
Fuel Map and Learn Function Smoothing
Configurable User Password Protection
Fully Configurable lap top Gauge Panel
FEATURES
Optional 5.7? full-color touchscreen LCD allows easy on-the-fly tuning,data-logging or can be used as an easy to see graphical gauge panel
Eight sequentially driven 8:2 peak and hold injector drivers, capable of driving up to 16 low or high impedance injectors as a standard feature. Multiple staged injector strategies
Eight channel Distributorless Ignition (DIS)outputs capable of directly driving ?Smart? ignition coils or Holley DIS coils. Will drive 2 wire coils with the addition of PN 554-112 high current coil driver module
Plug and Play control of factory GM 24x and 58x LSx engines
Integrated single channel wide band oxygen sensor control. Works with NTK or Bosch sensors
Internal data-logging standard with a huge 2GB of memory
4 Stage progressive nitrous control
Turbo boost control
Integrated water/methanol injection control
Self-tuning fuel table strategy greatly simplifies tuning process
Individual cylinder fuel and spark control allows you to unlock your engine?s potential
Works with 4, 6, 8 cylinder engines
Unique lb/hr based fueling strategy greatly simplifies and commonizes tuning
Advanced idle, closed loop, and enrichment strategies allow for very stable operation
ECU is fully potted and can be mounted in the engine compartment or interior
Sealed automotive and marine grade connectors
Allows for use of common OEM sensors as well as customer sensor calibration input
Ignition Plug and Play with GM 24x and 58x LSx engines, GM HEI, Ford TFI, magnetic and hall effect trigger, and other ignition systems. New Plug and Play applications in process. Custom settings can be configured to allow many other applications
1-5 Bar MAP sensor capability
Two channel knock control sensor Inputs for both one or two wire knock sensors
Dedicated fuel and oil pressure inputs
Controls both stepper and PWM Idle Air Control (IAC) motors
Speed density, Alpha-N, or combination fueling strategies
4 Programmable high or low Pulse Width Modulated (PWM) outputs and 4 fully configurable inputs can be configured for use
4 Stage nitrous oxide control
Fully featured nitrous control eliminates the need for a separate nitrous controller device
Can be configured ?Wet? or ?Dry? with closed loop feedback
Progressive control based on time, RPM, or boost, requires part # 554-111
Lean or rich safety cutoff
Full timing retard/control configurability per stage based on RPM or time
Integrated Water/Methanol injection control
Uses Holley Water/Meth solenoids specially designed and calibrated for use with this EFI system to allow the user to enter Water/Meth flow as a percentage of fuel injector flow for Water/Meth tubing

The post Holley HP EFI ECU appeared first on Hartline Performance.