Hondata KPro V4 (00-05 S2000) Upgrade HON-KPRO-S2K

Hondata KPro V4 (00-05 S2000) Upgrade

  • Allows KPro V4 to be Used in 00-05 S2000

  • Upgrade for KPro V4 Installed ECU Only

  • Customer Must Supply KPro ECU

  • Compatible with RSX Type S ECU (PRB-A01 to A12)

$450.00 $450.00 $450.00 /
On Backorder Only Available Available 40+ in stock Available


This is a specially adapted ECU which allows the 2000-2005 S2000 to run the RSX Type S ECU (PRB). The Hondata KPro V4 Upgrade for the Honda S2000 is the perfect solution for customers that want an easier to manage tuning solution. Please note that this product is only for the upgrade to the KPro V4 on the customer's PRB ECU. Hybrid Racing does not supply PRB ECU for this KPro option. 

In order to use the PRB ECU, the engine crank and cam sensors must be changed to equivalent 2006-2007 parts - see below.

The S2000 KPro includes a 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 ECUs must be PRB A01-A12 and in perfect working order. Hondata will not use any other ECUs for the S2000.  

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

  • 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  

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)
The approximate cost of these parts is $300-375.  

**Images shown are not an actual representation of the S2000 KPro package. These should not be used for product reference. 

2000-2005 Honda S2000
*Not Compatible with Drive-By Wire 2006-2009 S2000
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.  
Immobilizer. The S2000 immobilizer is not supported.
Water Temperature. The S2000 dash water temperature display functions as per normal. For an AP1 the second segment normally lights at 145 degrees F, and the third at 165 degrees F.
Air Conditioning. In KManager you will need to select 'Use alternate AC switch input'. No wiring changes need to be made. Idle up and enrichment is as per the stock ECU.
Closed loop.  The RSX ECU will run in closed loop using the S2000 primary oxygen sensor. Due to the RSX ECU normally using a wide band oxygen sensor, in KManager you use select 'Use Secondary Oxygen Sensor for Primary' (don't panic - the ECU is actually running off the S2000 primary oxygen sensor, which has been routed through the RSX ECU as the secondary oxygen sensor).  Using a wideband RSX oxygen sensor is not recommended because the oxygen sensor is expensive (as much as an aftermarket wideband) and substantial re-wiring is required. The ECU can datalog aftermarket wideband controller which output a analog voltage (via the ELD input).

KManager Configuration
The following parameters should be used in KManager:
  • Use only PRA ECU calibrations (PRA ECUs are the only ECUs which support a narrowband primary oxygen sensor).
  • Disable the immobilizer.
  • Disable VTC.Disable the multiplexer.
  • Select 'Use alternate AC switch input'.
  • Select 'Use Secondary Oxygen Sensor for Primary'.

OBDII Scan tools.  OBDII scan tools work normally.

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 ECU is the approximate size and shape of the S2000 ECU, and is located with the same orientation as the S2000 ECU, however it does not have the mounting holes in the same location. A mounting bracket is supplied to mount the ECU in the stock location. Note that this photo is from a hand made prototype - the finished bracket will be laser cut.  
(1) Hondata KPro Converted ECU
(1) Data Cable
(1) Adapter Harness
(2) Electronic Auxiliary Lead Harnesses
(1) Mounting Bracket
There is no warranty stated or implied due to the unusual stress placed on competition product(s) and/or the inability to monitor their modification, installation, and use, unless otherwise stated. In such case, Hondata warrants all products to be free of defects in materials and workmanship for normal use and service for a period of (30) days from date of retail purchase. 

As of September 01, 2018, the warranty on these specific Hondata products is extended to one year from the date of retail purchase: s100, s300, KPro, FlashPro, Coil Pack Retrofit (CPR), excluding: Harnesses 
(For any issues with 4 or 7 bar map sensors, the end user must contact us directly for further instructions.)  

*This will still need to be approved by Hondata Management. State and Federal laws may supersede this. *  

Parts returned must be determined by Hondata to be defective before any warranty credit or replacement is issued. Hondata’s obligation under warranty shall be limited to repairing or replacing, at its option, any part proven defective. The customer must prepay transportation charges. Final determination of the suitability of the products for the use contemplated by the buyer is the sole responsibility of the buyer. 

Products purchased from unauthorized dealers, or with the serial number missing, removed, or altered, are not eligible for warranty service. Proof of purchase, in the form of an invoice or sales order, may be requested. 

Hondata shall not be liable for any special, direct, indirect, incidental, or consequential damages, that might be claimed because of the failure of any part, including claims for delay, loss of profits, or labor. Hondata shall not be liable for any damage or injury to persons or property resulting from improper installation or misuse of any part subject to this warranty. There are no other warranties expressed or implied extending beyond those set forth above. 

All software must be used in accordance with the respective software license(s). 
Some products are not legal in California for off-road vehicles only and should NEVER be used on public highways.