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Hondata K-Pro V4 00-05 S2000

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$1,090.00 (You save $5.00)
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Product Description

S2000 KPro

This is a specially adapted ECU which allows the 2000-2005 S2000 to run from a RSX ECU. The engine crank and cam sensors must be changed to equivalent 2006-2007 parts - see below.


The S2000 KPro includes a new or user supplied RSX (PRB) ECU adapted for the S2000, and a wiring harness for the crank and cam sensors. It does not include the Honda parts - see Mechanical Modifications below.  All user supplied ecu's must be PRB A01-A12 and in perfect working order.  We will not use any other ecu's for the S2000.


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.

Mechanical modifications

The following items must be replaced before the S2000 K-Pro can be used. These parts are not supplied by Hondata and should be purchased from a Honda dealer.

  • Crank sensor 37500-PZX-003

  • Crank wheel 13622-PCX-013

  • TDC sensor 37510-PZX-003

  • TDC wheel 14112-PCX-003

  • Valve cover 12310-PCX-020

  • Drain plug washer (for PCV valve) 94109-14000

  • PCV valve 17130-PCX-003

  • IAT sensor 37880-P05-A00 (not required, but stock IAT will read about 30 degrees hotter)

Swapping the parts is relatively straight forward. Refer to the Helm manual for more information, but in brief you will need to:

  • Remove the accessory belt.
  • Remove the water pump pulley.
  • Remove the crank pulley.
  • Remove the front timing cover.
  • Remove and replace the crank timing wheel.
  • Remove and replace the crank sensor in the timing cover, and reinstall the timing cover.
  • Remove old wiring to crank sensor.
  • Install wiring harness from crank sensor to ECU.
  • Reinstall water pump pulley and accessory belt.
  • Remove the valve cover.
  • Remove and replace the TDC sensor wheel (exhaust cam).
  • Install the new TDC sensor and PCV valve in the new timing cover, and install the new valve cover.
  • Remove S2000 ECU. Install the wiring harness through the firewall underneath the clutch master cylinder. If you have cut the wiring rubber boot, seal it with silicone sealer.
  • Install the RSX ECU.

As a bonus your will find that your brand new valve cover is not dirty and has no oil stains.

The KPro4 consists of a hardware modification to certain K-Series ECUs, plus Windows softwarewhich allows you to re-program the ECU and datalog sensors.

Watch the introductory video


  • $695 new KPro4 (price excludes ECU)
  • $250 upgrade from working KPro (use this form)
KPro4 Enhancements

Faster and more powerful

The KPro4 uses a faster processor with more capability than the KPro-III.  This allows the KPro4 to perform more tasks without slowing down the ECU, like live tuning, output to a dash, flex fuel and advanced protection.  Calibration uploads and datalogging from a laptop are also faster.

Enhanced on board datalogging

The KPro4 has double the datalogging memory (64 MBit) of the KPro-III and can datalog at double the rate (100 Hz), giving an on board recording time of 10 - 220 minutes.

Faster upload & datalogging

The upload time is 30% faster than the KPro-III, with a typical initial upload time of 7 seconds. Subsequent uploads are also faster, and live tuning can be used for instantaneous updates.
Laptop datalogging is also 30% faster than the KPro-III.

Live tuning & autotune

Main tables can be updated in real time, without affecting the operation of the engine.  This allows dyno tuning without pausing to upload.
Autotune uses live tuning and a laptop to tune fuel tables as you drive.


The KPro4 includes Bluetooth for laptop programming/datalogging with a USB cable, and mobile datalogging.

Ethanol sensor input

An ethanol sensor can be directly connected to the KPro4, allowing flex fuel operation, with adjustments to fuel & ignition tables performed automatically based on fuel ethanol content.

Speed sensor input

A speed sensor input can be directly connected to the KPro4 and sent to the ECU.  This is configurable to any pulse based sensor and eliminates the need for a stock speed sensor.

Dash & datalogging outputs

The KPro4 has serial output (both TTL & RS232) and CAN output so that a dash can be driven from the KPro. The AiM MXL, Racepak & generic CAN outputs are supported.

Advanced Protection

Advanced protection options use the KPro4 analog inputs and engine information to intelligently shut down the engine when the conditions might be dangerous to the engine.

Better wideband support

The KPro4 can process a wideband lambda input (either analog or digital) and allow the ECU to run in closed loop from an aftermarket wideband without requiring the stock o2 sensor.

Full list of features

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