Why the Edelbrock E-Force Supercharger for the S2000?

The Honda S2000 is revered for its high-revving F20C and F22C engines, but even the most enthusiastic driver eventually craves more torque and horsepower. The Edelbrock E-Force Supercharger kit is engineered specifically for the S2000 platform, offering a positive-displacement Roots-type supercharger that delivers linear, predictable power from low RPMs all the way to redline. Unlike turbocharger setups that can introduce lag and complex plumbing, the E-Force system bolts onto the stock engine bay with a clean, OEM-like fitment.

This kit is particularly attractive because it retains the stock hood and does not require cutting or modification to the chassis. With proper installation and tuning, owners can expect gains of approximately 120–150 wheel horsepower on a stock internal engine, bringing total output to around 380–420 whp depending on fuel quality and calibration. These numbers make the S2000 significantly more competitive on track days and street pulls without sacrificing reliability.

Before committing to this installation, it is critical to understand the mechanical, electrical, and tuning requirements involved. This guide expands on the foundational steps and addresses common pitfalls that experienced builders and first-time supercharger installers alike encounter.

Preparation Before Installation

Solid preparation separates a smooth weekend install from a frustrating project that drags on for weeks. Begin by reviewing the official Edelbrock installation manual cover to cover. The manual provides torque specifications, routing diagrams, and wiring details that are specific to your S2000 model year (AP1 vs. AP2). Differences between the F20C and F22C engines affect throttle body positioning, fuel rail design, and ECU compatibility.

Choose a workspace with adequate lighting and ventilation. The S2000 engine bay is compact, and working in a cramped garage without proper airflow can lead to mistakes. Ideally, use a lift or sturdy jack stands to elevate the car—this grants access to the under-engine components, including the oil pan and crank pulley, which may need attention during the installation.

Enlist a helper. Several steps require two sets of hands, particularly when hoisting the supercharger unit into place and aligning the drive belt. Having an assistant also speeds up the process and reduces the chance of dropping components onto the engine or damaging delicate wiring.

Finally, verify that your engine is in good health before adding forced induction. Perform a compression test and leak-down test to confirm the rings, valves, and head gasket are sealing properly. A worn engine will fail quickly under boost, turning your supercharger project into an expensive rebuild.

Tools and Equipment Needed

The Edelbrock kit includes most hardware, but you must supply high-quality tools. Using cheap sockets or wrenches can strip bolts and ruin your day. Below is a comprehensive list of tools required for a complete installation:

  • Socket set (metric): 8mm, 10mm, 12mm, 14mm, 17mm, and 19mm sockets are the most frequently used. Deep sockets help with recessed fasteners.
  • Torque wrench: A beam-type or click-type torque wrench with a range of 10–150 ft-lbs. Calibrate it if you haven't used it recently.
  • Ratchet and extensions: 3/8-inch drive ratchet with 3-inch, 6-inch, and 12-inch extensions. A wobble extension is helpful for tight spaces.
  • Screwdrivers: Flathead and Phillips #2. Magnetic tips save dropped screws.
  • Wrenches (metric): Combination wrenches in 10mm, 12mm, 14mm, and 17mm. A ratcheting wrench speeds up the process.
  • Pliers: Needle-nose pliers and slip-joint pliers for hose clamps and electrical connectors.
  • Wire cutters and strippers: For trimming and connecting wiring harness leads.
  • Heat gun (optional): Useful for softening silicone couplers and hose ends during installation.
  • OBD-II scanner or ECU tuning software: Essential for verifying sensor readings and clearing error codes after the install.

In addition to tools, have a fire extinguisher rated for Class B (flammable liquids) and Class C (electrical) fires on hand. Working with fuel lines and electrical connections introduces risk, and a fire extinguisher is a non-negotiable safety item.

Step-by-Step Installation Process

1. Remove the Stock Intake System

Begin by disconnecting the negative battery terminal. This prevents accidental short circuits and protects the ECU. Remove the entire factory intake assembly: the air filter housing, intake tube, mass air flow (MAF) sensor, and intake manifold. Label each electrical connector and vacuum line as you disconnect them. A digital photo of the engine bay before disassembly serves as a useful reference during reassembly.

Tip: The S2000's intake manifold has several hidden bolts beneath the throttle body. Use a mirror and a flashlight to locate all fasteners before attempting to pry the manifold loose. Forcing the manifold can crack the plastic or aluminum components.

2. Install the Supercharger Bracket

The Edelbrock kit includes a custom bracket that supports the supercharger unit and drives the belt system. Clean the mounting surfaces on the engine block and cylinder head with brake cleaner to ensure a proper fit. Apply thread locker (Loctite 242, blue) to the bracket bolts as recommended in the manual. Tighten each bolt to the specified torque in a star pattern to distribute load evenly.

Common issue: Some brackets have tight tolerances near the alternator. You may need to loosen the alternator mounting bolts and pivot the alternator slightly to slide the bracket into position. Do not overtighten the bracket bolts until the supercharger is mocked up and alignment is confirmed.

3. Mount the Supercharger

With the bracket secured, lift the Edelbrock E-Force supercharger unit onto the bracket. The unit is heavy—approximately 35 pounds—so use a helper or a transmission jack to support it during placement. Align the supercharger pulley with the crankshaft pulley and accessory pulleys. Rotate the supercharger by hand to verify smooth rotation; any binding indicates misalignment.

Secure the supercharger mounting bolts and torque them to spec. Do not reuse old bolts; use the hardware provided in the kit. Once the supercharger is bolted down, install the drive belt according to the routing diagram. The belt tensioner should be adjusted to provide approximately 1/2 inch of deflection at the longest span.

4. Connect the Intake and Throttle Body

The Edelbrock kit includes a new intake pipe that connects the supercharger outlet to the throttle body. Use the provided silicone couplers and T-bolt clamps. Ensure the couplers are fully seated on the mating surfaces before tightening. Over-tightening the clamps can squirt the silicone and cause leaks; tighten until the clamp is snug but not deforming the coupler.

Leak testing is strongly recommended. A boost leak after the supercharger will cause lean air-fuel ratios and potential engine damage. Use a boost leak tester (available at any performance shop or online) to pressurize the intake system to 10–15 psi and listen for hissing sounds. Soapy water sprayed at connections will reveal bubbles where leaks exist.

5. Install the Fuel System Components

Forced induction requires more fuel to maintain a safe air-fuel ratio. The Edelbrock kit includes larger fuel injectors (typically 550cc or 750cc, depending on the kit version) and a fuel pressure regulator adapter. Remove the stock fuel rail and injectors. Install the new injectors with fresh O-rings lubricated with clean engine oil to prevent tearing.

Upgrade the fuel pump if your S2000 has high mileage. A Walbro 255 lph or AEM 340 lph fuel pump is a common companion to the E-Force kit. The stock fuel pump can struggle to maintain pressure at higher boost levels, especially in hot ambient conditions. Replacing the pump before installation saves you from diagnosing fuel starvation later.

After connecting the fuel lines, prime the system by turning the ignition to the ON position (without starting) several times. Inspect all fuel line connections for leaks before proceeding.

6. Connect the Electrical Wiring

The electrical harness for the supercharger includes connectors for the bypass valve actuator, the idle air control (IAC) motor, and the manifold absolute pressure (MAP) sensor. Route the harness away from hot surfaces (exhaust manifold, heater hoses) and sharp edges. Use zip ties to secure the harness every 6 inches.

The ECU is the brain of the supercharger system. The Edelbrock kit typically uses a reflash of the stock ECU or a piggyback controller. If you are using a standalone ECU such as a Hondata FlashPro or AEM Infinity, you will need to wire in the appropriate sensors and calibrate the tune from scratch. Do not attempt to run the supercharger on the stock ECU without tuning; severe engine damage will occur within minutes.

External link: Refer to the official Edelbrock Supercharger Support Page for wiring diagrams specific to your kit part number.

7. Check All Connections

Before turning the key, conduct a systematic audit of every connection, clamp, bolt, and hose. Use a torque wrench to re-verify critical fasteners (supercharger bracket, intake manifold, fuel rail). Check coolant hoses, vacuum lines, and electrical connectors. Confirm that the drive belt is properly tensioned and aligned.

Remove any tools, rags, or debris from the engine bay. Reconnect the negative battery terminal. Turn the ignition to the ON position and listen for the fuel pump prime. Check for fuel leaks. If everything is dry and secure, attempt to start the engine. It may take a few cranks to build fuel pressure and oil pressure.

Once the engine starts, let it idle for 10–15 minutes while monitoring coolant temperature, oil pressure, and air-fuel ratio. If the idle is rough or the engine stalls, re-check the IAC valve and throttle position sensor calibration.

Post-Installation Considerations

Installation is only half the battle. The following considerations are essential for reliability, performance, and longevity.

Professional Tuning Is Mandatory

The Edelbrock kit includes a base calibration, but it is a one-size-fits-all map that may not be ideal for your fuel (pump gas vs. E85), altitude, or driving conditions. Invest in a professional dyno tune from a reputable shop that specializes in Honda forced induction. A skilled tuner will optimize ignition timing, fuel tables, and boost control to maximize power safely.

A dyno session typically costs $500–$800 but is the single best investment you can make after installing the supercharger. The difference between a safe tune and a marginal tune can mean the life of your engine. Hondata FlashPro is the most commonly used tuning platform for the S2000 and is compatible with the E-Force system.

Cooling System Upgrades

Supercharged S2000s generate significantly more heat than stock. The intercooler built into the Edelbrock intake manifold (an air-to-water setup) relies on a separate heat exchanger and pump. Flush the supercharger cooling system with distilled water and a quality coolant additive. Consider upgrading to a Koyo aluminum radiator or a Mishimoto radiator to keep overall engine temperatures in check during aggressive driving.

Monitor intake air temperatures (IAT) with your tuning software. If IATs exceed 140°F under boost, look into heat exchanger upgrades or ice tank setups for track use.

Clutch and Drivetrain Considerations

The S2000's stock clutch is designed for approximately 240 wheel horsepower. At 380+ whp, the stock clutch will slip immediately under hard acceleration. Plan for a clutch upgrade at the same time as the supercharger installation. Popular options include the ACT HD (heavy-duty) and Competition Clutch Stage 4 kits. The flywheel should also be resurfaced or replaced.

The differential and axles are surprisingly robust on the S2000, but 400+ whp can stress the differential mounts. Inspect the rear subframe for cracks and consider installing Energy Suspension polyurethane differential bushings to reduce wheel hop.

Maintenance Schedule Adjustments

A supercharged S2000 requires more frequent maintenance. Change the engine oil every 3,000 miles using a high-quality synthetic oil (5W-30 or 10W-40, depending on climate). Change the supercharger oil (traction fluid) per Edelbrock's recommendation, typically every 20,000 miles. Spark plugs should be replaced with NGK BKR7EIX or Denso Iridium IK22 at every oil change interval for optimal combustion under boost.

Inspect the drive belt every 3,000 miles for cracks, glazing, or fraying. The belt is subjected to higher tension and heat than stock and can fail without warning. Carry a spare belt in your trunk—this simple precaution can save a track day or a long drive home.

The Edelbrock E-Force kit is CARB-approved (Executive Order number applicable to specific part numbers) for the S2000 in most states, including California. Retain all CARB stickers and documentation. If you are installing the kit in a region that follows California emissions standards, verify that your kit includes the correct CARB EO number to pass smog inspection. Without it, you risk failing visual inspection.

External link: Check the latest California Air Resources Board (CARB) Aftermarket Parts Database for Edelbrock EO numbers before installation.

Common Pitfalls and How to Avoid Them

Experienced installers consistently report a few common issues. Being aware of these will save you time and frustration:

  • Belt misalignment: Even a 1mm offset in the supercharger pulley alignment causes belt chirping and premature wear. Use a straightedge to verify alignment across all pulleys.
  • Vacuum leaks: The S2000's idle control system is sensitive. A small vacuum leak after the MAF sensor causes erratic idle and lean conditions. Use a smoke machine to find hidden leaks.
  • Fuel injector scaling: When switching to larger injectors, the ECU must be recalibrated with the correct injector dead times and flow rates. Guessing these values leads to poor drivability and potential detonation.
  • PCV system: Under boost, the stock PCV (positive crankcase ventilation) system can pressurize the crankcase, causing oil leaks and blow-by. Install a check valve or an oil catch can to prevent this. S2KI (S2000 Internet Community) has dedicated threads with specific recommendations.

Performance Expectations and Real-World Results

On a properly tuned S2000 with the Edelbrock E-Force supercharger, expect the following performance benchmarks (approximate values on a Dynojet dynamometer):

  • Stock F20C (AP1): 200–210 whp, 140–150 wtq
  • Edelbrock E-Force (8 psi, pump gas): 330–360 whp, 230–250 wtq
  • Edelbrock E-Force (10 psi, E85): 380–420 whp, 270–290 wtq

The torque curve rises sharply from 3,000 RPM and stays flat through redline, eliminating the S2000's characteristic "VTEC surge" and replacing it with a relentless pull. Quarter-mile times improve from mid-14 seconds to low-12 seconds with a competent driver and proper tires. On road courses, the supercharger's linear power delivery makes corner exits more predictable and faster.

Key Considerations Before Starting

Before you order the Edelbrock E-Force kit, consider the following:

  • Budget realistically. The kit itself costs approximately $5,500–$6,500, but factoring in tuning, clutch, fuel pump, cooling upgrades, and labor (if you are not doing the work yourself), the total investment easily reaches $9,000–$11,000.
  • Skill level. This is not a beginner-friendly install. Mechanical experience with engine disassembly, electrical wiring, and ECU tuning is essential. If this is your first forced-induction project, seek mentorship from an experienced builder or pay a professional shop.
  • Insurance. Notify your insurance provider about the supercharger installation. Some companies may deny coverage for modifications or require a separate policy. A written notification and agreed value policy can protect your investment.

The Edelbrock E-Force Supercharger is one of the most well-engineered bolt-on power adders available for the Honda S2000. When installed with precision, supported with appropriate upgrades, and calibrated by a knowledgeable tuner, it transforms the S2000 into a genuinely fast modern sports car without sacrificing the character that makes it special. Approach the project with patience, respect the engineering, and you will be rewarded with a driving experience few modifications can match.