|What's it for?
This page includes a variety of information on how to tune
the Acura RSX and other Honda K-Series cars (Civic, TSX) with the Hondata K-Pro ECU. It also contains
additional information on RSX tuning and modification in general,
with an emphasis on ECU tuning.
For a complete write-up of all my mods to-date, click here. For a quickie on how to tune the K-Pro, click here.
The Hondata K-Pro
Hondata Seminar Transcript
This a rather comprehensive (17,000+ words!) description of the Hondata K-Pro
ECU. It covers
just about anything anyone would want to know about the K-Pro. There is basic information in there,
but also information on how to tune with the K-Pro, fix knock and fueling, and some pretty technical stuff.
These are my notes from the Hondata tuning seminar I attended in March of 2004. The notes
are quite extensive and cover a) general Honda tuning principles, b) some items relating to the
s200 ROM Editor, and c) the K-Pro system. Those interested should
also download the seminar slides Hondata used (click
here to download pdf)
Tuning 21st Century Style--The Hondata Story
I sent this this article, with pictures, to Honda Tuning Magazine and offered it to them for free. They
were not interested and never even returned my emails or calls.
This is an expanded summary of Hondata's advanced
videos. It includes my commentary and some of my own experiences.
Good stuff to know for anyone who wants to turbo or supercharge their engine,
right from the source.
final NA Dyno
The graph shows a dyno tuning session June 2004 at Church Automotive Testing in Torrance, CA.
Hondata's Doug MacMillan was kind enough to invite me and show me how to tune with the K-Pro.
I was quite pleased with the results, but keep in mind that Dynapacks tend to read high.
initial Comptech supercharger Dyno
The graph shows the first dyno result with the Comptech Stage 1
supercharger installed. It was done November 2004 on a Dyno Dynamics
dynamometer at Comptech USA
in El Dorado Hills, CA. The baseline shows stock with just an Icebox
intake. The blue line is with the supercharger, using the 310 cc
stock injectors. We cut off at 7800 rpm because duty cycle was
Comptech supercharger Stage 2 Dyno
The graph shows the dyno results comparing the street Comptech
supercharger kit with the Stage 2 upgrade (3.6-inch pulley, larger
injectors). It was done April 2005 on a Dyno Dynamics at Comptech USA
in El Dorado Hills, CA.
comparisons: stock/Hondata 4/K-Pro/CTSC
This is a composite graph that shows the difference between stock,
Hondata #4 and Comptech Icebox, Hondata K-Pro and AEM CAI, and street Comptech
supercharger. The black dots show the VTEC point in each setup.
Knocking and ignition
Knock control is crucial to getting maximum power
without harming the engine. As of now it is not entirely clear how
the K-Series handles knocking. These are some thoughts on knocking and how the K-Pro
When you get a new ECU (or buy one with the reflash already
on it, you need to have the ECU matched to your immobilizer
and key. Click here for
how it's done (Note: Have Acura do it, NOT Honda).
This is a pdf file of a review I did of the CarCPU automotive computer system. I wrote it
for Handheld Computing Magazine, which is one of the magazines I produce.
RSX mph/rpm calculator
Some really great person programmed this handy rpm and speed calculator for the RSX.
What, according to the California Air Resources Board is legal and
what is not. To check for specific items that may or may not have a CARB
exemption click here. And to see what the California Highway
Patrol considers street-legal, click
The first customer Comptech SC installed
Comptech SC wallpaper (1024x768)
The K-Pro ECU inside
K20a2 PRB vs PRC manifold
Fixed cam angle torque curves
My Gran Turismo 4 Integra Type R
Hondata K-Manager archive
In case that for some reason you need to go back to an older revision of the K-Manager
software, I have an archive of the installer .exe files. This is
absolutely a last resort as it is never a good idea to go back to an older
rev. Also, as of rev 1-2-0, a version checker won't let you run older
versions unless you delete the version entry in RegEdit.
Some of my threads at ClubRSX.com
My threads and posts (well over 3,500) tend to be long and somewhat involved. Here are some of the more interesting ones:
How to adjust fuel in K-Pro
Hondata reflash and K-Pro FAQ
How to locate and eliminate knock
Drag racing contemplations
Will Hondata get me better gas mileage?
Air temperature correction calculator
Lean protection explained
Boost comparison turbo versus supercharged
Auto Meter boost gauge install
Blower RPM calculator
Pre 1.1 calibrations need retuning
Mugen SS DIY and data
The cam and ignition tuning predicament
Supercharger intake manifold considerations
Older calibration? Upgrade!
K-Pro intimidating to many users?
Cam angle comparison
A day of tuning at Hondata
Some Eaton Supercharger facts and figures
ITR manifold installed/impressions
How open, exactly, is our open loop?
AEM CAI installation: here's the scoop
Datalog: Icebox versus AEM CAI
Hondata IMG installation
The K-Pro Business Model/Predicament
Icebox facts and figures, dyno
What's legal in Kalifornia
Modifying my 2004 RSX: first 5 months
Fujitsubo PG: decision, purchase, install
Getting started with my new 2004 Type-S (1st post)
A day at Sacramento Raceway
Pics from a great Sunday at the Sacramento Raceway drag strip.
Hot cars, including several RSX's, and some REALLY hot babes. Warning: I have a fast server but constantly max out my bandwidth, so
loading this may take forever.
AEM CAI installation
For all those folks who get a AEM CAI but have no
installation manual, here are scans of each page of the manual. Warning: the
manual that comes with the AEM CAI is confusing and low black&white quality,
so the scans are no better.
2005 RSX ECU pinouts
These are the pinouts for the 2005 ECU (copyright Helms manual).
Progression of my mods
This is a list of the progression of mods I installed,
why I decided to do them, and what my experience with each was.
Power Enterprises USA