SKU: 7983138815

Hondata Reflash - RSX Type S 2002-2004 K20A2

Sale price$130.50 Regular price$145.00
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Ships within 48 hours · Estimated delivery Sep 9 - Sep 14

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Description

Hondata Reflash - RSX Type S 2002-2004 K20A2Reflash your 2002 2004 RSX Type S engine computer. Fuel, ignition and cam angle optimized. VTEC point lowered to 5200 rpm for cars with intake systems. Rev limiter optionally raised to 8600 RPM (see valve spring tech information). 12 20 peak wheel hp from a stock RSX depending on the dyno and modifications. 15 20 ft lb torque increase between 2500 3500 rpm. Peak torque now at 3200 rpm on an unmodified RSX. Very flat smooth torque curve. 95% of peak

Reflash your 2002-2004 RSX Type S engine computer.

  • Fuel, ignition and cam angle optimized.
  • VTEC point lowered to 5200 rpm for cars with intake systems.
  • Rev limiter optionally raised to 8600 RPM (see valve spring tech information).
  • 12-20 peak wheel hp from a stock RSX depending on the dyno and modifications.
  • 15-20 ft/lb torque increase between 2500-3500 rpm.
  • Peak torque now at 3200 rpm on an unmodified RSX.
  • Very flat smooth torque curve. 95% of peak torque available from 2500-8000 rpm.
  • Fully dealer compatible - works with all Honda scan tools and equipment.

This is for an ECU reflash - the ECU is not included.  Hondata does not sell direct - the reflash must be purchased from a Hondata dealer. The ECU reflash form must be sent with your ECU.

We do not recommend the use of nitrous or forced induction for this reflash. For these applications use the K-Pro.

Two  programs are available.  They both are based on the performance program above and vary only in rev limits:

  • K20A2-2: 5200 VTEC point and stock REV limit
  • K20A2-4: 5200 VTEC point and 8600 rpm REV limit

Warning

Within the USA this product is legal only for racing vehicles which may never be used upon a public highway.

Restriction
Sales Region US Only
EPA/CARB status (USA) Competition vehicles only
Vehicle
Model RSX
Year 2002-2004
Market US
Trim Type S
Engine K20A2
Transmission MT
ECU
Part Number 37820-PRB-A01 to 37820-PRB-A08
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 7983138815

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Reviewed in the United States on March 11, 2026
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jd
Pawtucket, US
★★★★★ 5
Perfect fit for my fit
Size: 2" x 10" x 11"
Bought this for my Honda fit sport. Perfect fit for my fit. We shall see how it works out in the long run. I'm guessing every six months I'll wash it out, give it a light piling with the refresher kit I bought. The car doesn't get driven a lot during the year, so, doing it this way should be more than fine.
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Reviewed in the United States on April 22, 2026
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P Patel
Charlottesville, US
★★★★★ 5
Premium, Reusable Cabin Filter – Worth It Long-Term
Size: 2" x 10" x 11"
I've been using the K&N Lifetime Washable Cabin Air Filter in my vehicle for several months, and here's my experience: Pros: Washable & Reusable: Eliminates the need for frequent replacements, saving money over time. Improved Airflow: Noticed a slight increase in airflow through the vents, enhancing cabin comfort. Odor Control: Effectively reduces musty smells, providing a fresher cabin environment. Cons: Initial Cost: Priced higher than disposable filters, but the long-term savings offset this. Cleaning Required: Needs periodic cleaning to maintain performance, which might be inconvenient for some users.
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Reviewed in the United States on June 25, 2025
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Alan Douglas Charles Cavanaugh II
Bozeman, US
★★★★★ 5
Must have over other filters.
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Amazing KN never fails for cabin filter works great in my 2021 Honda Civic hatchback sport touring.Must have for the 10th Gen Civic better air flow in car and cleaner smell easy to wash and reuse.
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Reviewed in the United States on April 25, 2026
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Martha Brown
Chelsea, US
★★★★★ 5
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