Cold Air Intake Kit for 2000-2005 Honda S2000 Base Convertible 2.0L & 2.2L DOHC

2000–2005 Honda S2000 Cold Air Intake Kit FAQs

Q1: Is this cold air intake legal in my state?

A1: Not legal for sale or use in California (and other CARB-adopting states). This SKU does not carry a CARB Executive Order number, so if you live in California or another CARB-adopting state it cannot be installed on a vehicle registered for street or highway use unless an ECC retrofit is completed under CVC §27156. Confirm your local emissions rules before ordering.

Q2: Which Honda S2000 models does this cold air intake kit fit?

A2: It fits the 2000–2003 S2000 (AP1) with the 2.0L F20C and the 2004–2005 S2000 (AP2) with the 2.2L F22C1. Intake tubing routing, throttle body location, and mounting points are identical between the two generations, so the same kit bolts directly onto both without modification. If your car does not appear in the Fitment table, email service@flasharkracing.com with your VIN before ordering.

Q3: How much horsepower will this add, and will I feel it?

A3: Typical intake-only gains for this application are approximately +3 to +5 hp / +3 to +10 lb-ft. Honda already extracted 240 hp from a naturally aspirated 2.0L, so an intake alone does not unlock a large gain. What you feel day to day is the sharper throttle response from 4,000 RPM up — reducing intake restriction and removing the factory resonator chambers lets the engine react faster when you tip into the throttle. Actual results depend on the vehicle, calibration, installation, and supporting hardware.

Q4: Will this improve my fuel economy?

A4: No meaningful change. S2000 fuel economy is dominated by the 9,000 RPM (AP1) or 8,200 RPM (AP2) redline and how often the driver uses it. If you install this kit for the VTEC induction tone, you will likely spend more time in the upper rev range, which can reduce fuel economy rather than improve it. An intake alone cannot guarantee a measurable MPG gain.

Q5: Will this void my warranty?

A5: Under the Magnuson-Moss Warranty Act, an aftermarket part cannot void your factory warranty unless it is proven to have caused the failure. This kit is designed as a direct bolt-on replacement that keeps factory sensors and connections, and the stock airbox and resonator can be reinstalled at any time.

Q6: Will it throw a check engine light (CEL)?

A6: Extremely unlikely on the S2000. The F20C and F22C1 use a speed-density MAP/IAT system rather than a mass airflow sensor, so there is no airflow reading that intake changes can throw off. Check that the breather hoses are connected and not kinked, and that the intake air temperature sensor is fully seated. If a code does appear, scan it before assuming the intake is the cause — cars of this age often log unrelated O2 sensor or evaporative system codes.

Q7: Do I need a tune after installing this intake?

A7: No tune is required for a bolt-on install that retains the factory sensors. Because the S2000 ECU calculates fuel delivery from manifold pressure and temperature, moderate changes to the intake path stay inside the factory fuel trim range. A tune becomes worthwhile if you also change the exhaust, header, or test pipe, but it is not needed for the intake on its own.

Q8: Is this a cold air intake or a short ram intake?

A8: A short ram intake keeps the filter in the engine bay, while a true cold air intake routes it down behind the front bumper or into the fender cavity for slightly cooler intake air — and takes on hydro-lock risk in wet conditions. This kit is a short ram design: the filter sits in the engine bay, not down in the fender well, which keeps installation straightforward, avoids any water-ingestion risk, and exposes the full induction note without routing tubing through the fender. If you are weighing the two layouts, start with our short ram vs cold air intake comparison.

Q9: Will heat soak be an issue?

A9: In stop-and-go traffic or after extended idling, intake air temperatures will rise with any engine-bay-mounted intake — that behavior comes with the short ram layout. Once the car is moving, airflow through the engine bay rapidly brings intake temperatures back down, and the S2000's MAP-based fuel system handles the change smoothly. For track use where sustained high RPM builds serious underhood heat, a heat shield or thermal wrap can help.

Q10: Is the filter dry or oiled, and how do I clean it?

A10: It is a dry red cotton-gauze cone filter, so no oil is required and there is no re-oiling step to get wrong. To clean it: tap off any loose debris, wash with filter cleaner, rinse thoroughly, air-dry completely, then reinstall. For the full walk-through, see our step-by-step guide to cleaning a cold air intake filter.

Q11: How difficult is the install on an S2000?

A11: Moderately involved — budget 60–90 minutes. The stock airbox is mounted behind the front bumper on the driver's side and requires removing the fender liner, or at least peeling it back, to reach the lower resonator box. Basic hand tools plus a trim panel removal tool for the plastic clips will get it done. The Flashark kit itself mounts to factory bolt locations, so the challenge is disassembling the stock system, not fitting the new one.

Q12: Will this intake make my S2000 sound better?

A12: Yes — and for most S2000 owners this is the whole point. The factory airbox and resonator plumbing were designed specifically to silence induction noise, and removing them uncovers the F20C and F22C1 VTEC crossover at 6,000 RPM as a sharp, mechanical howl at wide-open throttle. Below 4,000 RPM the sound is subtle, and it settles down at highway cruise rather than droning.

Q13: Does this intake work with the factory strut bar?

A13: Yes. The intake tube is routed with sufficient clearance for the factory front strut tower bar on both AP1 and AP2. Aftermarket strut bars with larger-diameter tubing or different mounting geometry may interfere, so check clearance before you finalize the clamp positions.

Q14: Does this fit right-hand drive (JDM/UK) S2000s?

A14: This kit is designed for left-hand drive North American S2000s. On right-hand drive cars the brake master cylinder, steering column, and some accessories sit on the opposite side of the engine bay and can interfere with the intake tube routing. Some RHD owners have installed similar short ram intakes with minor adjustments, but it is not guaranteed. Email service@flasharkracing.com with your VIN before ordering if your car is right-hand drive.

Q15: Is a cold air intake worth it on the S2000?

A15: It depends on what you are after. If you expect a big horsepower number, you will be disappointed — the F20C and F22C1 were engineered close to their limit from the factory, and there are no cheap gains left with an intake alone. If you want to hear the VTEC crossover the way the engine was built to sound before NVH tuning muted it, this kit delivers exactly that without touching engine internals.