Hondata K-Pro (Version 4)
Hondata KPro4 (Version 4) is a fully programmable ECU for 02-04 Acura RSX (DC5), 02-05 Honda Civic Si (EP3), and any K Swapped vehicle. K-Pro is a must have to get maximum performance out of your k-series engine.
The K-Series Programmable ECU (K-Pro) consists of a hardware modification to any K-Series ECU, plus Windows software which allows you to re-program the ECU and datalog sensors.
If you would like to upgrade from a previous k-pro version to version four, it is done directly through Hondata using this form: http://hondata.com/downloads/kpro4_upgrade_form.pdf.
You are responsible for paying for and sending your ECU to Hondata. You can send your ECU as fast as you would like and shipping costs normally start at $10.00 for ground and $60.00+ for next day air. We recommend using an express service (2 day or next day) through FedEx or UPS because they have the least amount of delivery problems, provide proper insurance, and have good package tracking. We recommend that you do not use USPS because of delivery issues. You are not sending your ECU to K Series Parts you will be sending it to Hondata directly and we provide all of the instructions on where it needs to be sent once your order is approved.
After we approve your order we will send you two emails, one email will be a Hondata form and the other email will be instructions for shipping and what items need to be included. Orders submitted by 3:00pm Mountain Standard Time Monday to Friday are normally approved same day. Orders places after 3:00pm MST or on Saturday and Sunday are processed the next business day.
Hondata normally reflashes ECU's the same day they receive them but they do get busy and it might take an extra business day. We recommend that you plan on a 3 day total turnaround time from the day that Hondata receives your ECU.
Hondata uses K Series Parts FedEx account to next day air the ECU back to you once the reflash has been installed. This means that you do not have to pay for return shipping. Your ECU will arrive by 3:00pm the day after Hondata completes the reflash installation. Hondata does not provide us with a tracking number or notification when they ship the ECU back to you.
ECU Serial Number
The serial number is located on the ECU. Hondata has provided instructions on how to remove the ECU.
K Series Parts cannot sell K-Pro to customers outside of the United States unless you purchase a brand new ECU or send your ECU to K Series Parts directly. Please contact us first if are not located in the United States.
Version 4 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 Uploads: 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 and 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.
Bluetooth: The KPro4 includes Bluetooth for laptop programming/datalogging with a USB cable, and mobile datalogging.
Ethenol 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.
It has come to Hondata's attention that counterfeit KPros, green circuit board Versions 1 and 2, are being sold as new and used. Protect yourself from purchasing a counterfeit K-Pro by checking out this page.
Do not purchase new Hondata items from online auction sites such as E-Bay. There is a high risk of being scammed or being sold a counterfeit. Hondata dealers do not sell through on-line auction sites. Do not purchase from Sehablaauction / PrecisionProposition.
- 2002-2004 RSX (Type S) (PRB ECU)
- 2002-2004 RSX (Base 5 speed) (PND ECU)
- 2001-2006 Japanese DC5 Integra Type R (PRC ECU)
- 2002-2005 Civic Si (PNF ECU)
- 2003-2004 Japanese Civic Type R (PRD ECU)
- Engine Swaps - Must use 02-04 Engine harness and 02-04 Transmission
- Lotus Elise and Exige - Dash Converter Required
- Fits inside the ECU
- Designed and assembled in USA
- 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.
- Expanded fuel and ignition tables, both in rpm and load, to 60 lbs boost and 11,000 rpm (these are not the upper limits)
- 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
- Base maps are included only for K20A2, K20A3 (RSX Base), K20A3 (Civic SI) and K20A engines.
- The 2002- CRV ECU (5 speed) (PPA -A0# ECU) can be used.
- Support for the manual K20A3 engine and the secondary intake runner as used in the base model RSX and CRV.
- The Japanese PRD and PRC ECU do not support a fuel tank pressure sensor required for some US emissions tests, but will likely pass a tailpipe sniffer test if the catalytic converter is in place.
- PNF, PPA and PND ECUs for 5 speed transmissions will not operate the reverse lock solenoid on 6 speed transmissions.
- The K-Pro ECU will not work on Automatic vehicles. Automatic ECUs cannot be converted to manual.
- To use the K-Pro on a 2005-2006 RSX, an adapter harness is required, an 02-04 specially modified ECU must be modified for used and the primary oxygen sensor from an 03-04 must be used.
- Turn around time is usually 2 days from the time it is received.
- From previous ECU's Honda has changed from 2 dimensional tables (engine speed and engine load) to 3 dimensional tables (engine speed, engine load and cam angle). The K-Pro ECU retains these 3 dimensional tables to ensure the engine is running at optimum efficiency and power for every cam angle.
- The stock JDM and US O2 sensor is wide band and can read from 11.5:1 to 30:1 A/F ratios.
- Most OBDII features may be disabled for race vehicles.
- Error codes and the OBDII readiness status may be datalogged.
- Base tables are supplied for the RSX Type S, RSX Base, Civic SI and Integra Type R engines. These tables have been dyno tuned.
- No external programmer or other equipment is necessary. Just plug the ECU into a laptop via a USB cable.
- Tables may be map-traced in real time.
- The K-Pro ECU is not real-time updateable, however most changes to tables and settings can be uploaded in 1-2 seconds.
- The K-Pro ECU is a separate product from the s100/s200 line, and will not share the same options (e.g. 3 step) nor software (HondaLogger, RomEditor). All systems are fully programmable by the user. All K-Pro ECU systems include all features (e.g. boost, datalogging).
KManager Software Features
- Download KManager Software
- KManager Details
- High and low speed 16 x 20 ignition and fuel tables for correct VTEC tuning
- Injector size fuel trim
- Fuel trim for starting, throttle tip in and individual cylinder trim
- Rev limiter with fuel cut
- Launch control with anti-lag
- Adjustable VTEC window with load and throttle control
- Adjustable idle speed
- MAP sensor type and calibration
- Adjustable boost cut with hot and cold settings
- Closed loop control
- Air temperature compensation
- Fuel and ignition correction based on gear
- Closed loop
- Three general purpose outputs for nitrous control, quad boost control or similar
- On board datalogging trigger conditions
Honda may not cover mechanical damage to the engine under warranty resulting from exceeding the factory red line. Hondata and Club RSX will not cover any damage as a result of installing this product.
- Part Number: K-Pro for 02-04 RSX
- Manufacturer: Hondata
- Acura Integra
- 1994 Acura Integra Coupe
- 1995 Acura Integra Coupe
- 1996 Acura Integra Coupe
- 1997 Acura Integra Coupe
- 1998 Acura Integra Coupe
- 1999 Acura Integra Coupe
- 2000 Acura Integra Coupe
- 2001 Acura Integra Coupe
- 1994 Acura Integra Sedan
- 1995 Acura Integra Sedan
- 1996 Acura Integra Sedan
- 1997 Acura Integra Sedan
- 1998 Acura Integra Sedan
- 1999 Acura Integra Sedan
- 2000 Acura Integra Sedan
- 2001 Acura Integra Sedan
- Acura RSX
- 2002 Acura RSX Type-S
- 2003 Acura RSX Type-S
- 2004 Acura RSX Type-S
- 2002 Acura RSX Manual
- 2003 Acura RSX Manual
- 2004 Acura RSX Manual
- Honda Civic
- 1988 Honda Civic All
- 1989 Honda Civic All
- 1990 Honda Civic All
- 1991 Honda Civic All
- 1992 Honda Civic Hatchback
- 1993 Honda Civic Hatchback
- 1994 Honda Civic Hatchback
- 1995 Honda Civic Hatchback
- 1992 Honda Civic Coupe
- 1993 Honda Civic Coupe
- 1994 Honda Civic Coupe
- 1995 Honda Civic Coupe
- 1992 Honda Civic Sedan
- 1993 Honda Civic Sedan
- 1994 Honda Civic Sedan
- 1995 Honda Civic Sedan
- 1996 Honda Civic Hatchback
- 1997 Honda Civic Hatchback
- 1998 Honda Civic Hatchback
- 1999 Honda Civic Hatchback
- 2000 Honda Civic Hatchback
- 1996 Honda Civic Coupe
- 1997 Honda Civic Coupe
- 1998 Honda Civic Coupe
- 1999 Honda Civic Coupe
- 2000 Honda Civic Coupe
- 1996 Honda Civic Sedan
- 1997 Honda Civic Sedan
- 1998 Honda Civic Sedan
- 1999 Honda Civic Sedan
- 2000 Honda Civic Sedan
- 2001 Honda Civic Coupe
- 2002 Honda Civic Coupe
- 2003 Honda Civic Coupe
- 2004 Honda Civic Coupe
- 2005 Honda Civic Coupe
- 2001 Honda Civic Sedan
- 2002 Honda Civic Sedan
- 2003 Honda Civic Sedan
- 2004 Honda Civic Sedan
- 2005 Honda Civic Sedan
- 2002 Honda Civic Si Hatchback
- 2003 Honda Civic Si Hatchback
- 2004 Honda Civic Si Hatchback
- 2005 Honda Civic Si Hatchback
- Honda CRX
- 1988 Honda CRX All
- 1989 Honda CRX All
- 1990 Honda CRX All
- 1991 Honda CRX All
- Honda Del Sol
- 1993 Honda Del Sol All
- 1994 Honda Del Sol All
- 1995 Honda Del Sol All
- 1996 Honda Del Sol All
- 1997 Honda Del Sol All
Customers Also Bought
55 reviews for Hondata K-Pro (Version 4)
5.0 out of 5.0
4/28/2017 by Gabriel Kraft
Got this K-Pro for my K24 swapped EP3 and it's definitely worth it. Way more user friendly than I expected for how extensive the options are.
4/21/2017 by Will B.
Worth every Penny
I wasn't 100% sure what I was getting into, but it's fantastic! My only complaint is that I'm going to have to justify making more purchases to my wife! The software is easy to use, and the results are instantaneous! I also recommend downloading the phone app as you can see all the useful information and even clear DTCs right on your phone! Awesome all around and only wish I had bought it sooner.
11/28/2016 by Luis Quintero
A must have!
Well worth the money. Now all my bolt ons are actually noticeable. And I got my ecu back the day after they reviewed it!
10/21/2016 by jason` kobelenz
Got my ecu back in 3 days and uploaded a basemap myself and was much more than I expected worth every penny
7/16/2016 by Diego Pereira
I was contemplating for a long time whether or not to actually spend the money on a kpro, but trust me, it was so worth it. Currently gathering my last bolt ons before getting tuned but having control of the whole engine is awesome. Did I mention it got back to me 2 days after sending it out? CRAZY!
5/21/2015 by Crsx eramirez
Shawty you a 10
Obviously this product is pure hondata. This review though is for the great service kseriesparts provided! I had no hassle in placing this order and the product arrived in great condition. I trust this site completely. Kseriesparts you a 10!
5/20/2015 by Taj
Whenever I installed kpro I used the regular factory calibration and just by doing that made my car extremely fast can't imagine what it'll be like once the car is turbo with this fantastic ecu
3/28/2015 by Zachary
So AWESOME! Absolutely worth every penny!
Finally went through with getting Kpro, and I must say, it is amazing! Definitely worth the wait and every penny! Best mod you could do with your car! My 03 RSX is a whole new car, fun to drive again and actually feels fast now and much healthier.
10/29/2014 by Alfredo
Fast shipping , Great Customer Service
I am impresed. I placed my order around 10am (cental time) Thursday , I overnight shipped it around 7pm, and got it back monday @ 3pm after work. I can feel many improvements.
10/18/2014 by Jr
You'll won't regret it
Got it for my tsx swap but used well before on my k20a2 and noticed right away after using some of the maps they provide a difference worth every penny
4/15/2014 by Gisselle
Great addition or foundation part for your RSX
I haven't done too much in terms of tuning it but with a sweet little street tune I experience noticeable gains in power and I am write pleased and excited to play some more with this bad boy.
1/29/2014 by Douglas Foster
A must for K-series owners
This was my 1st 'performance' mod and its still the 'best' mod I have. The ability to tweak your OEM ECU as a standalone is vital and better than an aftermarket standalone by far. And now its a steal $600 range? wow I paid $900+ for mine.
10/3/2013 by lucas ronk
i love kpro
gains are everywhere with kpro from better torque to being able to check your codes, to being able to change your parameters. very easy to use. im beating stock turboed cars now. definitely should get all the bolt ons first (intake, header, exhaust) before kpro then get a tune
8/22/2013 by Pierce Fonville
100% worth it!
After the Ecu arrived at hondata it was on its way back 18 hours later! You will notice immediate gains in specifically low end power and after you are done tuning the whole powerband feels smoother and has much more power to offer. Get it! You will Not regret it
7/1/2013 by CS: Rubbermaid
The first thing to modify
Hondata's K-Pro SHOULD be the first thing you buy for any Honda with a K series motor. There is no excuse, especially if you own a 02-04 RSX Type-S, the stock PRB ECU is the ideal ECU to own for a K motor. Hella fast shipping and new low price. Win win! Honestly, quit reading my review and ship your sh*t out RIGHT NOW! Blah blah blah the "Best bang for your buck" blah blah blah New price of $690 blah blah blah why are you still reading this?
5/17/2013 by Fred
Best Place to Buy From!
In reality K-Pro is what it is, it all comes down to what store should I buy from. This was easy, simple, and quick. It is a well known supplier and the price was great.
4/15/2013 by marc
just do it
Absolutely amazing. All stock motor and just wants to pull. TOok like half an hour to set up cause I had to explore the program. But just awesome. Do it.
3/26/2013 by Jason A. Cubias
First off shipping was insanely fast. sent it tuesday got it back thursday. Secondly, you completely open the options of what you can do with the k20 motor. Noticeable gains with a simple base map. worth every penny
3/5/2013 by donald knutson
Great product, very fast turnaround
I shipped my ecu out friday and got it back tuesday. Great customer service and prices.
2/24/2013 by AlexD308
Just a must haveproduct!!! Good stuff to Kseries parts n hondata.
2/7/2013 by Yanesa
Very impressive what hondata can do to an ecu... Great communication thru clubRSX answered all of my questions. And the best part is that you get your ecu back that same week you purchase. Best money you can spend on a K20..
1/10/2013 by ChrisP
Customer service through k series parts was great! I sent my ecu away and got in back the same week. very impressed!
1/8/2013 by Asa
I recently purchased my 03 rsx base and didn't know the potential it had to be something great. That changed when I found crsx and they taught me alot and the first thing I learned was that the K20 is a touchy motor, you can't just bolt on and not tune so they told me the best thing and the first thing was to upgrade the ecu with hondata k-pro and it is amazing. Even stock my car performs alot smoother and you can feel the difference in the drive. Make this your first upgrade because it is worth every penny. Hondata FTW!!!
11/20/2012 by matthew dillon
Shoulda been first
I waited a few years after buying my rsx to add this upgrade and I wish id have done it sooner. this should definitely be one of the first upgrades you get for your car.
9/13/2012 by Scott
Works Perfect, Order Was Completed Fast
Everything is working perfectly. Imobilizer didn't want to work at first, but after I enabled it, uploaded file, took key out for 10sec and started the car it works just fine. ECU was returned within the week and I was able to start tuning the next weekend.
8/12/2012 by chris
product be a banging, straight FAYA
4/25/2012 by Alex
This is hands down the best mod for your money!!!
1/13/2012 by matt
BEST MOD. PERIOD.
plain and simple, even with a basemap, the power gains are instantly noticed throughout whole rpm range. for the price of this upgrade and a tune, 1200 bucks couldnt go to a better performance modification. feels like a different engine. easy to work though k-manager program also.
8/30/2011 by RedlineDC5
Worth every penny.
Ordered Kpro through CRSX at 3am Wed. Received forms through e-mail at 11am Wed. Mailed ECU USPS Express to CA at 4:25pm Wed. Received ECU back completed at 2pm Fri. All this from the east coast. Kudos to CRSX and Hondata for fantastic service, and another thumbs up to Hondata for a fantastic product. If you're at the point where you're considering this purchase, do it. You won't regret it.
7/4/2011 by RacerX
K-pro = worth every dollar
Hands down the most useful and satisfying "mod" you can buy for the K. Just don't forget, this is NOT a 'plug-n-play mod', it's a plug and start tuning mod! so do research before diving into the tuning world...
6/24/2011 by Rsxbase87102
Love it !! Worth the money
4/28/2011 by Tony Capazzi
The Kpro by far is the most important and useful upgrade on the market! I wish i'd have bought this before any other mod that i have! If your on the fence about you need to fall off it and buy hondata asap! All k-series should've been equiped with kpro from the get go!
11/19/2010 by Roger Rios - Matias
Best Buy for your car, def a must
Wasn't quite the believer. Everyone said get it, it's the best mod you can do for your car. I finally got it and have no doubt it is the best thing I've purchased,by far. With the price down it's def a steal.
10/31/2010 by Mike
All I have done on my RSX is exhaust and intake, and with K-Pro installed now everything is much smoother and I am looking forward to future upgrades (possibly turbo) that will require the upgrade to run at their optimum.
7/5/2010 by SERGIO
WORTH IT ALL!
KPRO WORTH EVERY PENNY..THANKS VERY HAPPY AND SUPER HAPPY WITH CLUBRSX SERVICES..
6/5/2010 by Josh S.
Necessary for any more than bolt-ons
Great product and it really unleashes the potential of the k-series engines!
3/22/2010 by Chris, 03 RSX Type S
I just recently had cams, springs, and retainers installed, and without KPRO and a tune, it drove pretty sketchy. Now after I installed KPRO and had it dyno tuned, it feels like a totally different car. Well worth the money invested, and the tuner absolutely loved working with KPRo and how complex and advanced the program is. Highly recommend to anyone looking to get the most out of their K20.
3/22/2010 by kun chen
great product and alot more hp gained!
1/19/2010 by KY
Worth every penny. I was really hesitant at first. But, I got it tuned and everything worked out fine. Great service and turnaround time. I think I had it shipped out on Monday afternoon for next day air and the K-pro came back to me from Hondata on Wednesday. Make sure someone is home to get your package!
12/14/2009 by Jason
Without a Doubt
I can sit here all day and ramble on about how wonderful Hondata's K-pro product really is. I think that I can speak for everyone who has or does own one when I say it is the finishing touch to any K series powered project. I am more interested in commenting about how great Clubrsx's service and sales are. Very VERY quick, responsive, and helpful. Also, with that in mind, at the time I bought my K-pro, Clubrsx had the cheapest 'new' price on Hondata's K-pro I was able to find anywhere online. Thank you Clubrsx and Hondata for great service and excellent products!
12/4/2009 by Jeremy C
I was a little intimidated by tuning my car by myself at first, but after a few hours of playing around with it, the process becomes almost second nature. As far as power, K Pro gave me some pretty great gains across the RPM band. The power increase can't be felt easily in one area because the power increase isn't "peaky," it was across the ENTIRE rev range. Two thumbs WAY up for K Pro and CRSX for making the purchase process so easy.
11/11/2009 by BlueBeast
If you have a K Series and want to mod it....K-PRO should be the first mod.....Also CRSX is the way to go so stop here and order it no need to go anywhere else.....
10/27/2009 by Davo307
Amazing... so much to work with and so much potential. For anyone who wants to get the full power out of their mods or for anyone going forced induction. I know at first the price made me hesitant and reading the reviews of others convinced me to get it. Now after buying it I can reassure anyone that it is totally worth it. Support crsx and buy from them.
9/25/2009 by Rob
Highly recommended if your goin for power.
1/1/2009 by matt
love it it jumped me up to 195whp/148tq with intake and exhaust with a tune
12/21/2008 by Stefan
best bang for your buck! cant wait to put in the turbo set up and get it tuned!
11/17/2008 by DC5_Champ88
Hondata K-Pro FTW!!!!!
CRSX Store makes buying Kpro the EASIEST thing in the world. Fast paperwork email, very good customer service through the email when i had a question. Best price around. Kpro is HIGHLY recommended for anyone both NA or FI. Instant power difference is felt. GET IT FROM CRSX STORE!!!
9/29/2008 by K20 on b00st s0n
Worth teh Money
Bought an e-manage to run my Greddy turbo setup and almost installed that, then finally learned how much better k-pro is. Glad I waited to get the extra money for it. Install is so much easy, no soldering or anything and seeing real time numbers from all the sensors through datalogging is awesome. Did I mention after my car was k-pro tuned it felt like a new car?
8/21/2008 by Phillip
I have had this product for about a month and i must say, man did it make my car come alive. Just toying around with basemaps there is a big difference, i plan to get dyno tuned soon. Anyone on the fence on buying this product should get it, it gives you so much and opens the door to many more upgrades. Clubrsx was very clear on what had to be done to order this product and made for an easy quick purchase. KPro FTW!!!
7/28/2008 by Hamburglar
This is my 3rd turbo setup and KPro has been the brains that make it all work. Definitely should be the first mod for anyone desiring more power. KPro is designed to make use of all the technology in the engine and then some.
7/20/2008 by dennis
With just a V2 intake and hks catback exhaust on my 2005 BASE RSX, this ecu gave me an incredible amount of power. Power you can feel! I took my friend (who owns an STi) for a ride after i installed it and put it on the 91 octane tune, and he was amazed at the torque from my 4-banger, throwing him back in his seat. He said it totally caught him off guard, and he was wondering how the hell a 4-cyl engine could do that.
4/30/2008 by JSenek
The key to getting the most out of your car
With most mods you will only notice a little change in how your car performs, but K-Pro (or the reflash) completely changes the attitude of your engine. The extra low-end torque from an improved vtec crossover is extremely useful both on the streets and at the track, and the ability to tweak how your engine runs to your liking is very rewarding. K-Pro will also greatly augment your engine modding options while allowing you to ensure that you're getting the most out of each component that you add or enhance. Overall I have been extremely pleased with the performance of Hondata's K-Pro and it has been my favorite addition to the car.
3/24/2008 by MELLO
Hondata K- Pro
This is the absolute best mod for my ride. I am going forced induction very soon and I love the different settings you can adjust.
2/26/2008 by jaime pagan
i had abunch of bolt ons on my k20A from CAI to HKS hI pOwer Exhaust and this unleashed my k20's pottential
2/24/2008 by Joseph Ortiz
Best modification to ever have been created
Hondata K-Pro is simply a godsend to the Honda/Acura community and even more precisely, to bless the awesome DC5 chassis as well as others(see fitment in description). Complete engine tuning capabilities make this the absolute best and cheapest choice if you're picking an engine management system for your vehicle as nothing else matches it. I recently purchased K-Pro for my Acura RSX Type S and I could not be any happier than I am right now, after a simple street tune, my car feels like a million bucks.