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2002-2004 Subaru WRX Nitrous System
Catalog #71003
Table of Contents
Page #
a. Edelbrock General Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
b. Before You Install Your Edelbrock Nitrous System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
c. What is Nitrous Oxide? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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2002-2004 Subaru WRX Nitrous System Catalog #71003 Thank You…. …for purchasing an Edelbrock Nitrous Oxide Injection System. Nitrous Oxide injection is one of the most exciting performance enhancements, for the dollar invested, on the market today. With the use of nitrous oxide come some important safety considerations. This manual has been written to help you during the installation and use of your Edelbrock Nitrous System. Please read it completely before you install and use your system. Please
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Caution!! Before You Install Your Edelbrock Nitrous System… Please read this Installation manual fully before installing this system. You will need to have available the following tools: Hand Tools: ❑ Socket set including ratchets and extensions ❑ Screwdrivers ❑ Pliers ❑ Bench vise ❑ Wire crimping pliers, wire strippers ❑ Floor jack ❑ Razor blade or other sharp, flat edged cutting instrument ❑ Vehicle jackstands ❑ Safety glasses Power Tools: ❑ Power drill ❑ Drill bits You should understand the f
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WHAT IS NITROUS OXIDE? Nitrous Oxide is a cryogenic gas composed of nitrogen and oxygen molecules. It is stored as a “gas over a liquid” which means that both liquid and gaseous nitrous oxide is delivered into your engine. It is 36% oxygen by weight, which is what produces the added horsepower. By injecting more oxygen (and a corresponding fuel signal), we create the additional power much like a supercharger or a turbocharger does. Nitrous Oxide is considered an “oxidizer” and not a fuel. Nitrou
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1.0 Introduction to your 2002-2004 Subaru WRX Nitrous System Within the pages of this manual is information, safety tips and operation instructions for your new Edelbrock Nitrous System. Watch for these symbols to know where to go for information. ….There is safety related information here. ….shows where technical information about your vehicle or specific skills that may help during installation. ….call Edelbrock Technical support hotline for more information. ℡ ℡ 1.1 General Information
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1.2 Jet Map Information Edelbrock Engineering has conducted dyno testing with the Edelbrock 2002-2004 Subaru WRX Nitrous System to ensure the horsepower increase with the nitrous system is as intended. On a typically stock 2.0L engine, you can expect the following approximate power gain: Nitrous Jetting Fuel Jetting Approx. HP Gain .034 .020 50hp On an engine of greater displacement, horsepower gains may be slightly different. 1.3 Engine Operation Considerations When used correctly, nitrous oxid
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1.4 Edelbrock 2002-2004 Subaru WRX Nitrous System BOM Qty. Description Qty. Description Jets Nozzle and Nozzle Hardware 1 ea. E1 Nozzle 1 ea. Jet .034 1 ea. E1 Nozzle Bulkhead Body Bolt 1 ea. Jet .020 1 ea. E1 Nozzle Bulkhead Concave Nut Fuel System and Hardware Solenoids and Solenoid Hardware 1 ea. 5ft. Length 5/16” Fuel Hose 1 ea. Performer Nitrous Solenoid 1 ea. 5/16” Barb Tee 1 ea. Performer Fuel Solenoid 1 ea. 1/8”NPT x 5/16” Barb Filter Fitting 2 ea. Solenoid Mounting Brackets 6 e
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2.0 Nitrous System Installation 2.1 Nitrous Bottle Mounting The nitrous oxide storage cylinder is typically called a “nitrous bottle”. It is an aluminum cylinder, designed and manufactured to withstand very high pressures. The valve on top of the bottle is a high-flow design that allows easy opening and closing which controls the nitrous flow to the engine compartment. Accurate calibration of your nitrous system depends on the bottle remaining at a stable temperature. In vehicles (such as wagons
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2.2 Bottle Orientation Accurate calibration of your nitrous system depends on the bottle remaining at a stable temperature. Choosing the proper location and orientation for your bottle can greatly affect the overall operation of the nitrous system. Please read the entire bottle mounting instruction section before making your final bottle location decisions. Bottle placement is critical to the performance of your nitrous system. It is important to understand how the bottle valve and siphon tube a
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2.3 Nitrous Bottle Installation After you have determined the location and orientation of the nitrous bottle, use the following procedure to install the bottle: 2.3.1 Street Car Installations 1. Disconnect vehicle’s battery. 2. Determine the location of the bottle within the confines of the rear of the vehicle. 3. Once a mounting location has been determined, raise the vehicle (following all safety practices involved in working on a vehicle from under the vehicle) and verify that there are no fu
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2.4 Nitrous Feed Line Mounting 1. Determine the route your main nitrous feed line will follow. Ensure the path does not route the nitrous feed line too close to the exhaust system, suspension, electrical lines/components or tires. 2. Attach nitrous supply line to bottle. 3. Feed nitrous line along proposed route. 4. Secure nitrous supply line to underside of vehicle. Note: Stainless steel covering of the main nitrous feed line is very abrasive. Shield painted components or sensitive system comp
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2.5.1 Nitrous Solenoid Mounting and Installation 1. Hold the nitrous solenoid securely (such as in a bench vise) being careful not to harm the solenoid or block the inlet or outlet of the solenoid. 2. Install nitrous filter fitting (Blue fitting 4AN X 1/8NPT) using liquid Teflon paste in the inlet port of the nitrous solenoid. Apply liquid Teflon paste to nitrous filter fitting. Install nitrous filter fitting to inlet port of the N O solenoid. 2 3. Install the blue 3AN X 1/8NPT fitting using li
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2.6 Nozzle Installation (Continuation)... 7. Using liquid Teflon, install the nozzle into the mounting collar. 8. Be sure the nozzle discharge is facing towards the throttle body. 9. Install the correct jets into the fuel and nitrous inlet fittings of the nozzle. Please refer to the Section 1.2 Jet Map Information to determine the correct nitrous and fuel jets to install into the nozzle. 10. Install the 3AN lines from the solenoid outlet fittings to their corresponding spray nozzle jet fittings
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2.7 Fuel Line Installation Before performing any of these steps, relieve the fuel pressure in the vehicle’s fuel system. Rubber Fuel Line Fuel Supply Installation Before performing any of these steps, relieve the fuel pressure in the vehicle’s fuel system. 1. After relieving all pressure, locate the place in the fuel feed line that you intend to intersect, making sure that it is within a reasonable reach of the fuel solenoid. 2. Cut the fuel line at the desired location, being sure that you cut
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3.0 Electrical System Installation 3.1 Nitrous Electrical Components Bill of Materials (BOM) Item # Quantity Description 1 1 ea. Activation microswitch 2 1 ea. Activation microswitch bracket (not shown) 3 2 ea. Activation microswitch mounting nut 4 2 ea. Activation microswitch mounting screw 5 1 ea. 30 amp relay 6 1 ea. Wire harness with integral relay/fuse holder 7 1 ea. Red lighted toggle switch 8 2 ea. 18/22g female spade connector, Nylon insulated 9 2 ea. 14/16g female spade connector, Nylo
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3.2 Nitrous Electrical System Wiring Diagram Switched 15 +12V 14 13 5 7 Relay Fuse Supply On Ground Arming _ Volts ACC RED _ Switch + 6 Socket Battery Socket 11 RED (2) 12 White WARNING! 11 10 Blue Black DO NOT CONNECT Black TO THIS TERMINAL 8 8 Microswitch Solenoid Solenoid Ground Ground 16 1 2 8 (2) 3 4 (2) Catalog #71003 Page 16 of 22 ©2004 Edelbrock Corporation Ground Brochure #63-0261 Rev. 3/04 - DC/mc
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3.3 Nitrous Electrical System Installation Procedures Determine the location of the relay and fuse holder wire harness. Most common installations locate these components inside the driver’s compartment and close to the fuse panel under the dash. You can also mount the relay and ruse holder harness close to the battery. However, these connectors are water-resistant not waterproof, so care is required when mounting this assembly under the hood of your vehicle. Wire Schematic Origin and Destination
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3.5 Arming Switch and Installation The arming switch is a red, lighted switch that is a “MASTER” arming switch for your nitrous system. Without it, your nitrous system would be “on” all of the time and capable of engaging anytime you go to wide-open throttle conditions with your vehicle. The switch, when in the “armed” position, is well lit. Therefore, it should be placed in an obvious position well within the line of sight and easy reach of the driver. Please refer to the procedures below for t
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3.6 Microswitch Installation and Wiring (continuation)... The bolts used to attach the microswitch have extra length to allow for spacing the microswitch away from the bracket to offer a level of adjustability of the microswitch. After determining the position of the microswitch, we recommend trimming the bolts for a clean installation. Due to the wide variety of throttle linkage combinations in use, it is impossible to supply a microswitch bracket custom tailored to each application. The univer
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4.0 Before You Run Your Vehicle Using Your Edelbrock Nitrous System You have just completed the installation of your Edelbrock Nitrous System. It is time to perform some basic system checks to ensure all of the work you have done is correct and ready to operate properly. The following procedure is designed to validate the operation of your nitrous system before operating your vehicle: Note: Before performing steps 1 through 4, make sure that the nitrous bottle is closed and main nitrous supply l
