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Hondata 05-06 K-Pro Version 4 with Adapter Harness

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Hondata 05-06 K-Pro Version 4 with Adapter Harness

★★★★★ ★★★★★ 14 Reviews
$865.00 & Free Shipping

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Because of the ongoing situation with COVID-19 Hondata is taking at least 2-3 weeks to process ECU's.

Monday-Friday: 9am-4pm MST


Hondata KPro (Version 4) is a fully programmable ECU for 05-06 Acura RSX (DC5). K-Pro is a must have to get maximum performance out of your k-series engine.

An ECU and O2 sensor from an 02-04 RSX are required, the 05-06 RSX ECU cannot be used.


  • USB connection for speed and compatibility
  • KManager Windows based software for parameter and table editing, calibration uploading and datalogging.
  • Many built in calibrations for common engine combinations
  • Built in datalogging to a laptop
  • On board datalogging memory (2 MB memory, 10-110 minutes datalogging)
  • Adjustment for different sized injectors, with overall fuel trim.
  • Configurable for any MAP sensor (to 5 Bar and above)
  • TPS based table lookup for ITBs
  • Engine protection from over boost and lean protection.
  • Launch control with anti-lag
  • Three multi purpose outputs for nitrous control or similar
  • Supports lambda tracing from the stock wideband o2
  • PWM output for boost control
  • Most OBDII features may be disabled for race vehicles.
  • Base tables are supplied for the RSX Type S, RSX Base, Civic SI and Integra Type R engines. These tables have been dyno tuned.

Only the following ECUs can be used:
  • 2002-2004 RSX Type S (PRB A03-A08, PRB-305 ECU).  Should be used for a Type S
  • 2002-2004 RSX (Base 5 speed) (PND -A0# ECU) Should be used for a Base
  • The stock 2005-2006 ECU part number PRB-A13 through PRB-A16 has a different microprocessor and cannot have a K-Pro installed.


After you order you will receive two emails; one with full instructions on where and how to send your ECU to Hondata and another with the form that you need to sign and include with your ECU.

You are required to send your ECU to Hondata for this service an ECU is not sent to you.

This product is final sale.

Not legal for sale or use in California on any pollution controlled motor vehicles. See for state by state emissions requirements.

WARNING: This product may contain chemicals known to the State of California to cause cancer or birth defects.


Brand: Hondata
Part Number: K-Pro 05-06 RSX with adapter harness
CARB Approved: No

Vehicle Fitment

Acura RSX
2005 Acura RSX Manual 2006 Acura RSX Manual
2005 Acura RSX Type-S 2006 Acura RSX Type-S

14 Reviews ★★★★★ ★★★★★

★★★★★ ★★★★★
5.00/5.00 Stars out of 14 Reviews
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5 Most Recent Read All 14 Reviews
Must Have
Corey Mowery | October 31st, 2017
If your serious about going any further than the basic intake header and exhaust you need k-pro. Get the most out of your existing mods. Easy install and plenty of tutorial videos online for choosing your base map and getting started with kpro.
Kpro v4
Raymond Nicolas | December 2nd, 2016
Installation was way too easy. And initially setting up the kpro was easy with the instructions provided. Got my car tuned remotely from a shop in California and I am in NC. car runs awesome now with the tune!
Works great
Phil | September 7th, 2015
Install took 30 minutes which included changing the O2 sensor and mounting the new ecu. Software installed and ran smoothly. I had an issue registering at first but I was able to get ahold of customer service quickly and found out it was because they were repairing servers. Waited 3 days and now everything runs fine. Great upgrade, easy install, good customer service. I'd recommend this to anyone looking for an easy power boost for the money.
Nolan Grieb | February 18th, 2015
Easily the best mod I've had so far! All I have is a Sri and Q300 running the cai base map on my 06 type s. All I can say is wow. Throttle response is better, installation was easy enough, and a great increase in hp and tp.
Worth it.
Michael DiDomizio | June 27th, 2014
By bar the best thing i have done for my car so far. Feels like care runs much better and sounds alot meaner. Very easy to use and install
Read All 14 Reviews