The world of motocross is entering a new era, one where computers will play an increasingly large role on our race bikes. With a crop of electronic fuel-injected bikes available for 2009, it’s certainly time to start becoming familiar with fuel injection and how to adjust it. The MXA wrecking crew has spent weeks learning how to reprogram the ECU on our 2009 CRF450. As we fiddled with the ignition timing and fuel flow, we constantly had to remind ourselves that the bike wasn’t a toy. Without proper respect, you could use the setting tool to really mess up your bike. Here are MXA’s ten steps to reprogramming the ECU on your 2009 CRF450.
REPROGRAM YOUR 2009 CRF450R They are easy if you
(1) Tools. Be sure you have the proper equipment. In addition to Honda’s PGM-FI Setting Tool kit, you’ll need an IBM AT compatible PC (Windows SE/2000/XP/Vista)
( 2) The hook-up. Step one is to install the driver for the Serial Interface Unit (the switchbox labeled Serial- USB I/F) and the program’s software onto your computer. To do this, you must insert the CD-ROM, then install the driver by plugging the Serial Interface Unit into your computer via the USB cable. If your computer doesn’t automatically begin hardware detection and installation, access the “USB Driver” folder on the CD and click the “Silicon Laboratories” icon. After the driver has been installed, click the “Setup Launcher” Honda icon to begin installation of the software. ( 3) Open the program. Once installation is complete, you can open the program and figure out the mapping you want to try before you bother connecting your com- puter to the bike. The first time you open the program, you will access the stock mapping from the file called “C:Program files\09CRF450R\09CRF450.E2P.” In function, you will modify these stock settings and save them under a different name, keeping the standard settings to fall back on. To be sure the program can communicate through the driver, find the driver under the device manager in the control panel and determine what port it’s installed to, for example, comm4. Return to the program and select that “CommPort.” ( 4) Map reading. The ’09 CRF450 PGM-FI Setting Tool allows you to precisely fine tune both ignition timing and air/fuel mixture ratio mapping. With the program open, the “Data Edit” menu in the upper left gives you three options for viewing fuel mapping (Fi) and three more very similar options for ignition mapping (IG). Be careful not to confuse the two. Adjustments can be
and a free USB port to communicate with the ECU. Honda’s PGM-FI comes with a CD-ROM to download the software and driver to your computer. Although a desk- top would technically work, it is best to use a laptop so that you can make track-side adjustments. You will also need a 12 volt motorcycle battery to energize the system and to write the new data to the ECU.
Battery not included.
A laptop is