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Hondata, Inc.
2840 Columbia St
Torrance, CA 90503

K-Pro Dual

Discontinued. Replaced by FlashPro for S2000.


This package enables a reprogrammed stock ECU and a specially modified K-Pro to work together to allow full tunability of supported drive by wire S2000 vehicles.

It consists of three parts:



  • 2006-2009 F22 US market S2000 with ECU part # 37820-PZX-A09 through A21
  • 2006-2009 F22 Japanese S2000 with ECU part # 37820-PZX-J02 through J21


Price Description
$1995* 06-09 Dual adapter harness & K-Pro installed in new ECU.
$1395* 06-09 Dual adapter harness & K-Pro installed in user supplied ECU.
$495* 06-09 Dual adapter harness User supplies K-Pro & ECU

For customers that already have a Hondata reflash, there is a $100 discount.

* These prices include the Dual adapter harness, reflashing the stock ECU, and modifying the circuitry of both ECUs to work together.

Are there any other costs?

Yes. The K-Pro requires the primary (front) oxygen sensor/ air fuel sensor from a US 2002-2004 RSX or US 2002-2005 Civic Si as the stock S2000 front sensor is incompatible.

  • 36531-PND-A11 is the front sensor from a 2002-2005 Honda Civic Si or
  • 36531-PRB-A01 is the front sensor from a 2002-2004 Acura RSX.

This is a plug in replacement. You purchase this from your Honda or Acura dealer.


Main features:

  • Factory reliability for your S2000.
  • Easy starting.
  • Dash water temperature display functions normally.
  • All the features of the K-Pro:
  • Injector re-calibration.
  • Fully mapped boost tables.
  • Nitrous control.
  • Datalogging.
  • Boost control.
  • And more...

See the K-Pro page for more information.

Operating notes

The K-Pro dual was designed to operate your car as safely as possible. In order to do this, we switch off systems in the stock ECU that the K-Pro takes control over. This enables the stock ECU to run without any error codes. No error codes means the VSA (vehicle stability assist) works as intended.

As there is no communication between the stock ECU and K-Pro, the status of the cruise control and air-conditioning, under control of the stock ECU, is not conveyed to the K-Pro.

We were unable to get the cruise control functioning safely, so cruise control is permanently switched off in the stock ECU.

Should the K-Pro need repair or maintenance, the stock ECU can still operate the car by itself if the adapter harness is removed and you have stock injectors. The rev limit is lower (7000 rpm) and VTEC disabled. 

K-Pro Dual compatible  ECUs

Used ECUs for the K-Pro Dual  may be sourced from the following vehicles

  • 2002-2004 RSX Base 5 speed (PND -A0 ECU)
  • 2002-2004 RSX Type S 6 speed (PRB A03-A08, PRB-305 ECU)
  • 2002-2005 Civic Si (PNF ECU)

These two ECUs have fewer nitrous outputs and emissions controls:

  • 2001-2005 Japanese DC5 Integra Type R (PRC ECU)
  • 2003-2005 Japanese Civic Type R (PRD ECU)

Are there any other costs?

Yes. The K-Pro requires an oxygen sensor from an 2002-2004 RSX or 2002-2005 Civic Si. This you will need to purchase from your Honda or Acura dealer.

Do I need to change the sensors like the 2000-2005 K-Pro

No. You don't even need to open the hood of your 06 + s2000.

Can I send a used K-Pro

Yes. Any 02-04 K-Pro is suitable for K-Pro dual ECU operation providing the unit works perfectly.   (After conversion to dual ECU operation the K-Pro cannot be converted back for single ECU operation.)

How do I purchase this?

Contact a Hondata dealer to arrange purchase. Fill out this form and send with your stock ECU and a donor ECU from the list above (if not purchasing a new ECU) to Hondata.

If I sell the car or K-Pro, how do I return the ECU to stock?

Send the stock ECU + cashier's check for $100 to Hondata. This covers the cost of reflashing the ECU back to stock and return freight for the continental USA.


OBDII Scan tools.  OBDII and Honda factory scan tools connect to the stock ECU. They will not register the status of systems like VTEC and the oxygen sensor as they are switched off. This must be accessed through the K-Pro datalogging.

User Supplied ECUs. User supplied ECUs must be checked before sending to Hondata. Any damaged or faulty ECUs will incur a processing cost.

ECU Mounting. The dual adapter harness is designed to allow the stock ECU to remain in the factory position and the harness then can be run under the carpet along outer door sill and the K-Pro ECU placed under or behind the driver's seat.




Copyright 2015 Hondata, Inc. All rights reserved. Warranty Information
Products not legal for sale or use in California on any pollution controlled motor vehicles.