For Subaru BRZ owners seeking a substantial power increase, the Edelbrock E-Force Supercharger stands out as one of the most refined forced-induction upgrades available. This positive-displacement supercharger, designed specifically for the FA20 engine, delivers smooth, linear power with a low-end torque curve that transforms the driving experience. Unlike turbocharger kits that often introduce lag, the Edelbrock system provides instant throttle response from idle all the way to redline. Typical gains range from 70 to 100 horsepower at the wheels on a stock engine when properly tuned, making this a transformative upgrade for autocross, track days, or spirited street driving.

Before beginning any forced-induction installation, it is critical to understand that the Subaru BRZ’s factory ECU cannot accommodate the added airflow and fuel demands without recalibration. While this guide covers the mechanical installation, a professional tune using software such as EcuTek or Delicious Tuning is mandatory. Plan your budget accordingly and secure a dyno appointment in advance. Let’s explore the complete installation process from start to finish.

Tools and Parts Required

A successful installation begins with proper preparation. Gather all tools and materials before lifting the vehicle. Working on a clean, level surface with adequate lighting will save time and reduce frustration.

Essential Tools

  • Metric socket set (8mm, 10mm, 12mm, 14mm, 17mm, 19mm)
  • Torque wrench (ft-lb and in-lb ranges)
  • Flathead and Phillips screwdrivers
  • Pry bars and trim removal tools
  • Coolant hose clamp pliers
  • Vacuum or catch pan for coolant
  • Safety glasses and mechanics gloves
  • Shop towels and brake cleaner
  • Jack and jack stands (or lift)

Included in the Kit

Edelbrock’s E-Force kit (part number 1580 for 2013-2020 BRZ) ships with the supercharger unit, intercooler, intake manifold adapters, fuel injectors (if required), belt, coolant hoses, mounting brackets, hardware, and a detailed instruction manual. Verify all components are present before starting.

Preparation and Safety Steps

Safety comes first. Disconnect the negative battery terminal and isolate it to prevent accidental reconnection. Allow the engine to cool completely if driven recently. Drain approximately one gallon of engine coolant by removing the lower radiator hose or using the drain plug—the Edelbrock system integrates with the factory cooling loop for the intercooler.

Important: The FA20 engine requires care when removing plastic covers and wiring clips. Use trim tools to avoid breaking tabs. A zip-tie binding or label maker helps keep track of connectors and hoses during reassembly.

Removing Factory Components

With the battery disconnected and coolant drained, begin removing the parts that will be replaced or relocated. Work systematically from top to front.

Step 1: Remove Engine Cover and Intake System

Unclip and remove the decorative engine cover (two 10mm bolts and rubber grommets). Then remove the entire factory air intake assembly: air filter housing, intake tube, mass air flow (MAF) sensor, and resonator. Set the MAF sensor aside—it will be reused in the new intake tract. Loosen the hose clamp at the throttle body and slide the tube off.

Step 2: Disconnect Throttle Body and Wiring

The throttle body is attached to the intake manifold with four 10mm bolts. Unplug the electrical connector, then remove the throttle body. Keep it clean and store it in a safe place; the kit may supply a new one or require reusing the factory unit. Disconnect any vacuum lines and the PCV hose from the manifold.

Step 3: Remove Intake Manifold and Fuel Rails

The stock intake manifold is secured by eight bolts (two per runner) plus a bracket at the rear. Loosen them evenly and lift the manifold straight up. Carefully disconnect the fuel rail—the FA20 uses a returnless system. Release the fuel pressure by pulling the fuel pump fuse and cranking the engine before disconnecting lines. Use a fuel line disconnect tool if necessary. Remove the injectors (they will be replaced with higher-flow units provided in the kit). Label all connectors.

Step 4: Remove Stock Belt and Idler Pulley

Unbolt the tensioner to relieve belt tension, then slide the serpentine belt off. Remove the idler pulley that sits where the supercharger will mount. Keep the factory alternator, power steering pump, and water pump pulleys in place.

Installing the Edelbrock E-Force Supercharger

Now the exciting phase begins. The E-Force supercharger is heavy—have an assistant help with positioning to avoid damaging the engine or the supercharger case.

Mounting the Supercharger Bracket

Edelbrock supplies a custom cast bracket that replaces the factory accessory mount. Install it using the provided bolts, torquing to specifications listed in the manual (typically 35 ft-lb for M10 bolts). Apply thread locker (Loctite 242) to all fasteners. Ensure the bracket sits flush against the engine block.

Positioning the Supercharger Unit

Using a floor jack or two strong arms, lower the supercharger onto the bracket. Align the drive snout with the pulley. Install the four mounting bolts and torque them in a cross pattern to avoid warping the case. Refer to the manual for exact torque—usually around 40 ft-lb for M8 bolts.

Installing the Intercooler and Intake Manifold Adapter

The E-Force uses a water-to-air intercooler core that sits beneath the supercharger. Connect the coolant lines using the included silicone hoses and clamps. Route them to the factory cooling circuit (a dedicated pump is included). Then bolt the intake manifold adapter plate onto the cylinder heads, using new gaskets. Torque to factory spec (15 ft-lb for M6 bolts).

Reinstalling Fuel Rail, Injectors, and Throttle Body

Install the new high-flow injectors into the fuel rail and seat them carefully. Apply a light coat of engine oil to the O-rings. Connect the fuel lines and torque the rail bolts. Reattach the throttle body to the supercharger’s intake port using the provided gasket. Plug in the electrical connector and vacuum lines.

Belt Routing

Install the new serpentine belt according to the diagram in the manual. The E-Force kit uses a longer belt that wraps around the supercharger pulley, crank pulley, alternator, and tensioner. Use the tensioner to apply proper slack—a belt tension gauge reading of 100-120 Hz (or as specified) is ideal. Double-check that the belt rides correctly on all pulleys.

Wiring, Coolant Lines, and Final Connections

With the supercharger mechanically secure, complete the remaining electrical and fluid connections.

Coolant System Integration

Connect the intercooler pump to the provided harness. The pump circulates coolant through the intercooler core and a small radiator (included) mounted in front of the engine. Bleed air from the system by filling the reservoir and running the engine with the cap off, then topping off. Use a 50/50 mix of distilled water and ethylene glycol antifreeze.

Sensor Relocation

The MAF sensor must be transferred to the new intake pipe. Drill a hole (if not pre-cut) using the supplied template, then secure the sensor with two screws. The MAP sensor may need relocation using the included extension harness—follow the directions closely to avoid vacuum leaks.

Reconnect Battery and Check for Faults

After all connections are made, reconnect the battery. Turn the key to the ON position without starting the engine for several seconds to prime the fuel system. Check for fuel leaks. Use a scan tool to verify no DTCs appear before starting.

Tuning and Calibration

This step is not optional. The Edelbrock supercharger increases airflow beyond what the factory ECU can compensate for. A base map is often provided by the tuner or flash tool vendor, but a dyno tune ensures safe air/fuel ratios and ignition timing. Contact a reputable Subaru BRZ tuner such as Delicious Tuning or FT86 Speed Factory for custom calibration. Expect to pay $500–$1000 for a proper tune, including the cost of an EcuTek dongle and license.

Warning: Running the engine without a tune can cause catastrophic detonation. Do not drive the car until you have the correct calibration loaded.

Final Checks and Test Drive

Before road testing, perform a thorough inspection:

  • Check all bolts for proper torque, especially intake manifold, supercharger bracket, and belt tensioner.
  • Verify coolant level and bleed any remaining air from the intercooler loop.
  • Look for oil or coolant leaks around hoses and connections.
  • Start the engine and listen for unusual whining (normal supercharger whine is fine; metallic rattling is not).
  • Let the engine idle until it reaches operating temperature, then rev gently to 3000 RPM while checking for boost leaks using a smoke machine or soapy water on joints.

Take the car on an initial test drive with light throttle and low boost. Log key parameters (AFR, ignition timing, boost pressure) using the tuning software to confirm the calibration is safe. Gradually increase load over the next 50 miles, staying out of full throttle until the tune is finalized on the dyno.

Maintenance and Long-Term Care

The Edelbrock supercharger requires periodic attention:

  • Change the supercharger oil (included in the kit) every 20,000 miles or as per the manual.
  • Inspect the drive belt every oil change; replace if glazed or frayed.
  • Check intercoolant level annually.
  • Keep the air filter clean—the kit’s filter is reusable.

For more information, refer to the official Edelbrock E-Force product page and the comprehensive installation guide. The FT86Club community is also an excellent resource—read build threads like this one for real-world tips.

Conclusion

Installing the Edelbrock E-Force Supercharger on your Subaru BRZ is a rewarding project that dramatically increases power while maintaining daily drivability. With careful mechanical work and a professional tune, you can enjoy a reliable 300+ horsepower from the FA20 engine. Take your time, follow the instructions precisely, and do not skip the tuning step. The result is a car that feels alive from the moment you press the throttle.