Why the Jackson Racing Supercharger?

The Honda S2000 AP1, with its F20C engine, is already a gem in the sports car world. Its 9,000 RPM redline and 240 horsepower out of a 2.0-liter four-cylinder are impressive for the early 2000s. But for many owners, the goal is not just more power but a broader, more usable torque curve without sacrificing that high-revving character. The Jackson Racing (JR) supercharger kit is a well-respected, CARB-legal system that adds a centrifugal supercharger to the intake tract. It delivers a linear, progressive power increase rather than the sudden spike of a turbocharger. This makes it ideal for track days and spirited street driving where predictable throttle response matters. Achieving a conservative 220 wheel horsepower (whp) on a dyno – roughly 250-260 at the crank – is a safe, reliable target that preserves engine longevity. This article breaks down every cost involved, from the kit itself to the supporting modifications and tuning required to hit that number without breaking the bank or your engine.

Breaking Down the Jackson Racing Supercharger Kit Cost

The heart of this upgrade is the Jackson Racing Supercharger system. For the AP1, JR offers a compact, high-efficiency centrifugal supercharger (often a Vortech or Rotrex unit) that mounts to the front of the engine. The kit is designed as a bolt-on solution, meaning it uses the factory engine mounts and accessory drive.

Kit Pricing and Inclusions

  • Base Supercharger Kit: $4,200 – $4,500 (depending on vendor and current pricing). This includes the supercharger head unit, mounting bracket, pulley, drive belt, intercooler (air-to-air or liquid-to-air, depending on generation), blow-off valve, intake piping, and all necessary hardware. It does not include tuning or fuel system upgrades.
  • Installation Labor: $800 – $1,200 at a reputable shop (4–8 hours of labor). DIY installation is possible with mechanical experience, but the kit is complex and requires careful belt alignment and intercooler plumbing. Most owners pay a professional.

Note: Prices fluctuate with the market. Check current rates from vendors like Jackson Racing, SOS Performance, or Ballade Sports. A used kit can be found for $2,500–$3,000 but often lacks updated brackets or the latest intercooler design.

Supporting Modifications: The $2,500 Necessity

Simply bolting on the supercharger will not yield 220 whp reliably. The F20C’s high compression ratio (11.0:1) and sensitive fuel management demand upgrades to ensure the engine doesn’t lean out or detonate. These supporting mods are non-negotiable for a safe build.

Fuel System Upgrades

  • High-Flow Fuel Pump: $300 – A Walbro 255 lph or equivalent is standard. The factory pump cannot supply enough volume at the increased pressure required by the boost. A drop-in replacement is straightforward.
  • Upgraded Fuel Injectors: $600 – 550cc or 650cc injectors (RC Engineering, Injector Dynamics) are typical. The stock 280cc injectors max out quickly. Expect $500–$700 for a quality set.
  • Fuel Pressure Regulator (optional but recommended): $150 – An adjustable regulator (e.g., Aeromotive) allows fine-tuning pressure for the injectors.

Intake and Exhaust Flow

  • Cold Air Intake (Part of the JR kit or separate): $250 – The JR kit often includes a filter and intake pipe, but a high-flow aftermarket intake (e.g., AEM, HKS) can be added. Do not double-count if included.
  • Upgraded Exhaust System: $800 – A free-flowing cat-back exhaust (e.g., GReddy, HKS, Invidia) reduces backpressure. For the AP1, a 2.5-inch or 3-inch system is ideal. A high-flow catalytic converter or test pipe adds $200–$400 more but is not strictly required for 220 whp.

Tuning: The Critical Component

  • ECU Tune: $500 – $800. The AP1 uses an OBD-I ECU that can be reflashed (e.g., Hondata, MoTeC M8) or a piggyback unit like an AEM FIC. A proper tune adjusts fuel tables, timing, and boost targets. Dyno time cost is included. Without tuning, the engine will not run correctly and may be damaged.

Additional Costs Often Overlooked

These items ensure the engine can handle the extra heat and stress.

Maintenance and Cooling

  • Oil Change with High-Performance Oil: $150 – Use 10W-40 or 5W-40 full synthetic (Mobil 1, Motul). A filter is extra. More frequent changes (every 3,000 miles) are recommended.
  • New Spark Plugs: $100 – One step colder plugs (e.g., NGK 4306 or equivalent) prevent pre-ignition. $80–$120 for a set of four.
  • Cooling System: If tracked, a larger radiator or oil cooler may be needed (add $400–$800). For street driving, the factory system suffices.
  • Clutch Upgrade (often required): $600 – The factory clutch might hold 220 whp for a while, but slippage is common. An aftermarket clutch (Exedy, ACT) adds $400–$700 plus labor. This is a conditional cost.

Miscellaneous Hardware and Fluids

  • Belts, hoses, gaskets: $200 – While installing, replace the supercharger drive belt and any worn coolant hoses.
  • Dyno time for tuning: Already included in the tune cost, but a final verification run may cost $50–$100.

Total Cost Summary

Jackson Racing Supercharger Kit (new) $4,500
Installation Labor $800
Fuel Pump $300
Fuel Injectors $600
Cold Air Intake (if not included) $250
Exhaust System $800
ECU Tune and Dyno $600
Oil Change / Fluids $150
Spark Plugs $100
Miscellaneous Hardware $200
Total (without clutch upgrade) $8,300
Optional: Clutch Upgrade $600
Grand Total with Clutch $8,900

These figures are estimates based on 2024 pricing. Buying used parts can save 20–30%. Always budget 10–15% extra for unforeseen issues like a failed belt or leaking hose.

Real-World Expectations and Reliability

With the setup above, expect 215–225 whp on a Dynojet (about 250–260 crank hp). The torque curve will flatten from 5,000 to 8,500 RPM, making the car much more responsive in daily driving. The Jackson Racing kit is known for its reliability when properly tuned. Many owners report tens of thousands of miles without issues. However, the AP1’s F20C has a fragile oiling system at high RPM; do not raise the redline above 8,500 RPM without upgrading the oil pump and baffled oil pan. For 220 whp, keeping the stock redline is recommended.

Common Pitfalls to Avoid

  • Skimping on Tuning: An off-the-shelf calibration is not reliable. Spend the money on a dyno tune from a shop familiar with Hondata or MoTeC.
  • Ignoring the Clutch: If you drive the car hard, the stock clutch will slip. Replace it as a precaution.
  • Using the Wrong Fuel: 91 octane (US) minimum; 93 or 100 octane for extra safety. Never run regular fuel.
  • Not Upgrading the Oil Cooling: For track use, an oil cooler is mandatory. The stock oil temps can exceed 280°F.

Alternatives to the Jackson Racing Kit

The JR supercharger is not the only path to 220 whp. Here are two common alternatives for reference:

  • Turbocharger (e.g., Full-Race kit): $3,500–$5,000. More power potential but more heat and complexity. Turbo lag on an AP1 is minimal with a properly sized unit, but the install is more involved.
  • Naturally Aspirated Build: $2,000–$4,000. Headers, intake, exhaust, cams, and a tune can get you 220–230 whp without boost. This preserves the linear throttle response and is lighter, but peak horsepower may be slightly lower.

Each has trade-offs. The JR supercharger offers the best blend of reliability, drivability, and ease of installation for a street car.

Resources and Further Reading

Final Thoughts

Achieving 220 whp on an AP1 S2000 with a Jackson Racing supercharger is a well-documented, cost-effective upgrade that significantly improves the car without sacrificing its character. The total investment of around $8,000 to $9,000 (including clutch) is reasonable for the bump in performance and reliability. Plan your budget carefully, invest in a quality tune, and don’t skip the supporting mods. The result is a car that pulls harder from mid-range to redline, making every drive more engaging. With proper maintenance, this setup will provide years of enjoyment.