Last major update: December 2006, minor update Jan 2016 -- Also check my ECU tuning blog
What's it for?
This page, mostly compiled 2004 to 2006 when I was very active at ClubRSX.com, 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 and supercharging. Much pertains to my own RSX Type S, which I bought new late 2003 and still have.
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
This is 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.
Hondata Seminar Transcript
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)
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. Note: this is a Windows .exe file and downloads to your computer.
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
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 4,000) tend to be long and somewhat involved. Here are some of the more interesting ones (note that I wrote most of these back in 2004-2006, and not all links still work):
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.
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.